refactor: simplify schema property filtering with class-based approach

[lordrip]

Context

Replace functional implementation with SchemaPropertyFilter class for better code organization and maintainability.

Changes

• Rename get-filtered-properties.ts → SchemaPropertyFilter.ts
• Convert from functional to class-based static methods
• Add type guards (hasNestedProperties, hasArrayItemProperties, isMatchablePrimitive)
• Extract helper methods for better separation of concerns:
  • matchesKeyOrTitle() - centralized key/title matching
  • matchesModelValue() - value-based matching logic
  • getNestedModelSlice() - type-safe model extraction for objects
  • getArrayModelSlice() - type-safe model extraction for arrays
  • filterObjectProperty() - dedicated object filtering
  • filterArrayProperty() - dedicated array filtering
  • matchesPrimitiveProperty() - primitive property matching
• Improve documentation with JSDoc comments
• Enhance type safety throughout the implementation
• Maintain all existing functionality and test coverage

The new structure makes the code more maintainable by breaking down complex logic into focused, well-documented methods while preserving the original filtering behavior.