[clang] [libclang/python] Refactor enum usage (PR #95608)

[Vlad Serebrennikov via cfe-commits]

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@@ -142,6 +142,7 @@ Clang Python Bindings Potentially Breaking Changes
   of variant 271.
 - Renamed ``TypeKind`` variant 162 from ``OBJCCLASS`` to ``OBJCTYPEPARAM``.
   The previous name was incorrect, it was a duplicate of variant 28.
+- Refactored enum usage, switching to the standard library `Enum` type
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Endilll wrote:

```suggestion
- Refactored enum implementation, switching to the standard library `Enum` type.
```

https://github.com/llvm/llvm-project/pull/95608