feat(types): add comparison methods to CData type hints (#19)

Adds type hints for comparison operators (`__eq__`, `__ne__`, `__lt__`, `__le__`, `__gt__`, `__ge__`) to the `CData` generic class.

This allows static type checkers to correctly validate comparison operations on `CData`-wrapped instances, preventing potential runtime errors and improving the overall developer experience.

Author: zen-xu

src/cbridge/types.py

@@ -19,6 +19,10 @@
     from typing_extensions import Self
 
     class CData(_CData, Generic[_T]):
+        def __lt__(self, other: Any) -> bool: ...
+        def __le__(self, other: Any) -> bool: ...
+        def __gt__(self, other: Any) -> bool: ...
+        def __ge__(self, other: Any) -> bool: ...
         def __iadd__(self, other: _T) -> Self: ...
         def __isub__(self, other: _T) -> Self: ...
         def __imul__(self, other: _T) -> Self: ...