Replace 32 with BitsSize in Bit<T> methods

[konard]

🚀 Solution Summary

This PR fixes issue #106 by replacing hardcoded 32 values with the BitsSize field in the Bit<T> class methods.

📋 Issue Reference

Fixes #106

🔧 Changes Made

• File: csharp/Platform.Numbers/Bit[T].cs
• Method: PartialWrite - Lines 29 and 33
  • Changed shift = 32 + shift; to shift = BitsSize + shift;
  • Changed limit = 32 + limit; to limit = BitsSize + limit;
• Method: PartialRead - Lines 43 and 47
  • Changed shift = 32 + shift; to shift = BitsSize + shift;
  • Changed limit = 32 + limit; to limit = BitsSize + limit;

✅ Verification

• ✅ Build: Solution compiles successfully
• ✅ Tests: All 7 tests pass (0 failed, 0 skipped)
• ✅ Code Quality: No breaking changes, maintains existing functionality

📖 Technical Details

The BitsSize field is already defined in the class as:

private static int BitsSize = NumericType<T>.BitsSize;

This change makes the bit operations generic and work correctly for different numeric types (not just 32-bit integers), which aligns with the generic nature of the Bit<T> class.

🧪 Test Results

Passed!  - Failed: 0, Passed: 7, Skipped: 0, Total: 7

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