feat: add r/demo/users.ClaimRandomName

[moul]

• Depends on p/demo/entropy (feat: add p/demo/entropy #2487)
• Add p/demo/wordlist
• Convert r/demo/users's _filetest.gno into _test.gno tests.
• Implement r/demo/users.ClaimRandomName
• Tentative to address independent unit tests (feat: make tests run in parallel #1312)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.75%. Comparing base (3b42391) to head (ac7f6f1).
Report is 254 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2486      +/-   ##
==========================================
+ Coverage   54.71%   54.75%   +0.04%     
==========================================
  Files         590      590              
  Lines       79036    78970      -66     
==========================================
- Hits        43243    43241       -2     
+ Misses      32543    32478      -65     
- Partials     3250     3251       +1     

Flag	Coverage Δ
contribs/gnodev	23.81% <ø> (ø)
contribs/gnofaucet	14.46% <ø> (-0.86%)	⬇️
contribs/gnokeykc	0.00% <ø> (ø)
contribs/gnomd	0.00% <ø> (ø)

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[github-actions]

This PR is stale because it has been open 3 months with no activity. Remove stale label or comment or this will be closed in 3 months.