feat: add tag and tagging management interfaces

[ch-liuzhide]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 87.68116% with 17 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/whiskerrag_types/model/tagging.py	81.13%	4 Missing and 6 partials ⚠️
src/whiskerrag_types/model/tag.py	87.50%	2 Missing and 3 partials ⚠️
src/whiskerrag_utils/loader/yuque_loader.py	91.66%	0 Missing and 2 partials ⚠️

Files with missing lines	Coverage Δ
...rrag_types/interface/db_engine_plugin_interface.py	90.97% <100.00%> (+1.28%)	⬆️
src/whiskerrag_types/model/__init__.py	100.00% <100.00%> (ø)
src/whiskerrag_types/model/permission.py	100.00% <100.00%> (ø)
src/whiskerrag_utils/loader/yuque_loader.py	68.59% <91.66%> (ø)
src/whiskerrag_types/model/tag.py	87.50% <87.50%> (ø)
src/whiskerrag_types/model/tagging.py	81.13% <81.13%> (ø)

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