[Lang Enhancement Proposal] Implement PblAny_T type

[Luna-Klatzer]

Affected area by change:

• Language Syntax: yes
• Language Library (Parac Base Library): yes
• Compiler: yes
• Pre-Processor: no
• Documentation: yes

Short Introduction and Summary
Implement the PblAny_T type to allow for new features such as dynamic casting, dynamic type conversion, run-type type checking, dictionaries and global type tracking to be implemented.

The PblAny_T is already partially implemented, but a base library for conversions and enhanced functionality needs to be provided to allow for proper usage without having issues while using it.

The signature of the type should be as follows:

struct PblAny_T {
  void* val;
  PblTypeMeta_T* type;
  PblSize_T* byte_size;
};

Is your request related to a problem? Please describe.

Currently, there is no way to properly implement certain features like dynamic casting and type tracking, without implementing the PblAny_T to allow for easier converting between different types.

This also includes the PblDict_T, which is proposed here #65

Describe alternatives you've considered

Possibly use advanced type checking and conversion, but with just a plain void* using additional compiler checks, to imitate the any type. This though seems to have no real benefit over this solution and complicate the issue.

Additional context

• [Lang Enhancement Proposal] Implement PblDict_T type #65