docs(core): enhance documentation and add core interfaces

[Ahoo-Wang]

• Add comprehensive Javadoc comments to FieldGetter and FieldSetter classes
• Add detailed documentation to MethodGetter and MethodSetter with parameter descriptions
• Enhance CompositeFieldDefinitionParser with usage explanation
• Add documentation to CosIdAccessorParser interface and its parse method
• Document DefaultAccessorParser with implementation details and capitalization utility
• Add comprehensive interface documentation for CosIdAccessorRegistry
• Create new CosIdGetter interface for ID value extraction from objects
• Create new CosIdSetter interface for ID value assignment to objects
• Add new DefaultCosIdAccessor implementation with complete ID handling logic
• Document IdMetadata interface with ID field information access methods
• Add new exception classes IdTypeNotSupportException and MultipleIdNotSupportException
• Enhance annotation documentation for CosId with detailed usage instructions
• Improve documentation for various ID converter implementations
• Add new registry and scanner components with complete JavaDoc coverage

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.37%. Comparing base (b514bd5) to head (940bed7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1011      +/-   ##
============================================
+ Coverage     85.32%   85.37%   +0.04%     
- Complexity     1328     1329       +1     
============================================
  Files           214      214              
  Lines          4191     4191              
  Branches        413      413              
============================================
+ Hits           3576     3578       +2     
+ Misses          341      340       -1     
+ Partials        274      273       -1     

Flag	Coverage Δ
unittests	85.37% <ø> (+0.04%)	⬆️

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