feat!: better type parsing

[numToStr]

Supported Types and other cases

• Primitive Types: nil, any, unknown, boolean, string, number, integer, function, thread, userdata and lightuserdata
• Array: TYPE[]
• Union Type: TYPE | TYPE | TYPE
• Union of literals: '"g@"'|'"g@$"', '1'|'2'|'3' etc. Variants should be wrapped inside '
• Table: table<KEY_TYPE, VALUE_TYPE>
• Table Literal: { key1: VALUE_TYPE, key2: VALUE_TYPE }
• Reference Type i.e., alias, class etc.
• Function: fun(PARAM: TYPE): RETURN_TYPE
  • Optional param: fun(PARAM?: TYPE): RETURN_TYPE
  • Missing Type: fun(a) (will fallback to any type)
  • Multiple returns fun(): string, number
• Grouping: (string|number)[]
• Optional ---@param a? string

Not Supported

• Dict { [string]: VALUE_TYPE } instead use table or table literal.
• Function w/ multiple returns as VALUE_TYPE in table literal i.e. { key1: func(): string, string, key2: string }

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Resolves #27
Resolves #46
Resolves #48