feat: implement enumeration reflection system

[ArthurVasseur]

• Add EnumValue class to represent individual enum values with name, value, and index
• Add Enumeration class inheriting from Object to represent enum instances
• Add EnumerationClass inheriting from Class to manage enum metadata
• Add EnumIterator and EnumIterable for range-based for loop support with structured bindings
• Implement ToString/FromString for enum value conversion
• Implement HasFlag/SetFlag/ToggleFlag for bitwise flag operations
• Modify CppGenerator to generate EnumerationClass metadata for @cct::Enum marked enums
• Add unit tests in Enum.cpp demonstrating all features

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (a3706c2) to head (8c3f141).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #7       +/-   ##
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- Coverage   70.02%    0   -70.03%     
=======================================
  Files          42    0       -42     
  Lines        2062    0     -2062     
  Branches      279    0      -279     
=======================================
- Hits         1444    0     -1444     
+ Misses        490    0      -490     
+ Partials      128    0      -128     

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