[WIP] feat: unify table features

[DrakeLin]

What changes are proposed in this pull request?

This PR refactors the table features implementation by unifying the separate ReaderFeature and WriterFeature enums into a single TableFeature enum, introducing proper feature type classification, and adding validation to ensure protocol correctness.

Added validate_table_features() method to Protocol that enforces:
- Reader features must be ReaderWriter type and also present in writer features
- Writer features must be either Writer type or also present in reader features (if ReaderWriter)

How was this change tested?

Fix all tests to use the unified table features

[codecov]

Codecov Report

❌ Patch coverage is 95.55556% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.68%. Comparing base (40bc46b) to head (e69c32a).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
kernel/src/actions/mod.rs	95.52%	9 Missing and 2 partials ⚠️
kernel/src/table_features/mod.rs	94.89%	5 Missing ⚠️
kernel/src/table_configuration.rs	93.75%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1404      +/-   ##
==========================================
+ Coverage   84.65%   84.68%   +0.03%     
==========================================
  Files         115      116       +1     
  Lines       29601    29905     +304     
  Branches    29601    29905     +304     
==========================================
+ Hits        25059    25326     +267     
- Misses       3331     3366      +35     
- Partials     1211     1213       +2     

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