Implement SummaryCallback to print fancy output

[efaulhaber]

We can now print output like this:

██████╗ ██╗██╗  ██╗██╗███████╗
██╔══██╗██║╚██╗██╔╝██║██╔════╝
██████╔╝██║ ╚███╔╝ ██║█████╗
██╔═══╝ ██║ ██╔██╗ ██║██╔══╝
██║     ██║██╔╝ ██╗██║███████╗
╚═╝     ╚═╝╚═╝  ╚═╝╚═╝╚══════╝

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Semidiscretization                                                                               │
│ ══════════════════                                                                               │
│ #spatial dimensions: ………………………… 2                                                                │
│ #containers: ……………………………………………… 4                                                                │
│ neighborhood_search: ………………………… SpatialHashingSearch                                             │
│ total #particles: ………………………………… 1211                                                             │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ FluidParticleContainer{2}                                                                        │
│ ═════════════════════════                                                                        │
│ #particles: ………………………………………………… 171                                                              │
│ density calculator: …………………………… ContinuityDensity                                                │
│ state equation: ……………………………………… StateEquationCole                                                │
│ smoothing kernel: ………………………………… SchoenbergCubicSplineKernel                                      │
│ viscosity: …………………………………………………… ArtificialViscosityMonaghan{Float64}(0.02, 0.0, 0.01)            │
│ acceleration: …………………………………………… [0.0, -9.81]                                                     │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ BoundaryParticleContainer{2}                                                                     │
│ ════════════════════════════                                                                     │
│ #particles: ………………………………………………… 435                                                              │
│ boundary model: ……………………………………… BoundaryModelDummyParticles(AdamiPressureExtrapolation)          │
│ movement function: ……………………………… nothing                                                          │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ BoundaryParticleContainer{2}                                                                     │
│ ════════════════════════════                                                                     │
│ #particles: ………………………………………………… 150                                                              │
│ boundary model: ……………………………………… BoundaryModelMonaghanKajtar                                      │
│ movement function: ……………………………… movement_function                                                │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ SolidParticleContainer{2}                                                                        │
│ ═════════════════════════                                                                        │
│ total #particles: ………………………………… 455                                                              │
│ #fixed particles: ………………………………… 5                                                                │
│ Lamé λ: …………………………………………………………… 1.0862068965517243e7                                             │
│ Lamé μ: …………………………………………………………… 1.206896551724138e6                                              │
│ smoothing kernel: ………………………………… SchoenbergCubicSplineKernel                                      │
│ acceleration: …………………………………………… [0.0, -9.81]                                                     │
│ boundary model: ……………………………………… BoundaryModelMonaghanKajtar                                      │
│ penalty force: ………………………………………… Nothing                                                          │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ AliveCallback                                                                                    │
│ ═════════════                                                                                    │
│ interval: ……………………………………………………… 1000                                                             │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ SolutionSavingCallback                                                                           │
│ ══════════════════════                                                                           │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Time integration                                                                                 │
│ ════════════════                                                                                 │
│ Start time: ………………………………………………… 0.0                                                              │
│ Final time: ………………………………………………… 0.1                                                              │
│ time integrator: …………………………………… RDPK3SpFSAL49                                                    │
│ adaptive: ……………………………………………………… true                                                             │
│ abstol: …………………………………………………………… 1.0e-6                                                           │
│ reltol: …………………………………………………………… 0.0001                                                           │
│ controller: ………………………………………………… PIDController(beta=[0.38, -0.18,…iter=default_dt_factor_limiter) │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘
┌──────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Environment information                                                                          │
│ ═══════════════════════                                                                          │
│ #threads: ……………………………………………………… 24                                                               │
└──────────────────────────────────────────────────────────────────────────────────────────────────┘

#timesteps:   1000 │ Δt: 2.3556e-05 │ sim. time: 3.3364e-02 │ run time: 2.0059e+00 s
#timesteps:   2000 │ Δt: 3.1627e-05 │ sim. time: 6.4736e-02 │ run time: 3.9709e+00 s
#timesteps:   3000 │ Δt: 2.8635e-05 │ sim. time: 9.8436e-02 │ run time: 6.1214e+00 s
────────────────────────────────────────────────────────────────────────────────────────────────────
Pixie simulation finished.  Final time: 0.1  Time steps: 3047 (accepted), 3274 (total)
────────────────────────────────────────────────────────────────────────────────────────────────────

 ────────────────────────────────────────────────────────────────────────────────────────────
                  Pixie.jl                          Time                    Allocations      
                                           ───────────────────────   ────────────────────────
             Tot / % measured:                  6.21s /  94.5%            455MiB /  97.4%    

 Section                           ncalls     time    %tot     avg     alloc    %tot      avg
 ────────────────────────────────────────────────────────────────────────────────────────────
 rhs!                               29.5k    5.87s  100.0%   199μs    444MiB  100.0%  15.4KiB
   update containers and nhs        29.5k    4.20s   71.5%   142μs    367MiB   82.8%  12.7KiB
     update nhs                     29.5k    1.80s   30.7%  61.2μs    239MiB   53.8%  8.29KiB
     compute boundary pressure      29.5k    1.21s   20.6%  41.0μs   83.2MiB   18.8%  2.89KiB
     ~update containers and nhs~    29.5k    618ms   10.5%  20.9μs   38.2MiB    8.6%  1.33KiB
     precompute pk1                 29.5k    568ms    9.7%  19.3μs   6.75MiB    1.5%     240B
   container interaction            29.5k    1.43s   24.4%  48.6μs   66.1MiB   14.9%  2.30KiB
   velocity and gravity             29.5k    152ms    2.6%  5.15μs   10.3MiB    2.3%     368B
   reset ∂u/∂t                      29.5k   52.6ms    0.9%  1.78μs     0.00B    0.0%    0.00B
   ~rhs!~                           29.5k   33.5ms    0.6%  1.14μs   2.94KiB    0.0%    0.10B
 ────────────────────────────────────────────────────────────────────────────────────────────

[LasNikas]

Awesome! That is really helpful.
Just a few complementary remarks...

[svchb]

I think it would look nicer if items set to nothing are hidden.

Also the SolutionSavingCallback box is empty.

[efaulhaber]

For the SolutionSavingCallback, I would like to show the saving interval, but AFAIK, that's not possible without explicitly storing it somewhere. I am planning to rewrite the callback soon anyway to write to VTK while the simulation is running instead of storing all the data in the RAM until the simulation finished.

For the Nothing part: I agree that not showing Nothing makes it cleaner, but I'm afraid that it might not be clear for users if, say, no penalty force is used or if this is just not printed. Therefore, I'd prefer to explicitly print that we are using no penalty force, no viscosity, etc.
@LasNikas which convention do you prefer?

[LasNikas]

I would also prefer to show Nothing to point out that it is enabled or not.
But why is there a upper and a lower case in nothing ? (see penalty force and movement function)

[sloede]

But why is there a upper and a lower case in nothing ?

Nothing is a singleton type, and its only value is nothing

[efaulhaber]

For some attributes I printed the type name to just show StateEquationCole instead of StateEquationCole{Float64}(7, 1000, whatever).
For the movement function, I want to print the function, which in this case is just nothing.