This commit fixes the documentation duplication issues and improves the
organization of the Transformer component documentation in both English and
Brazilian Portuguese.

Main changes:
- Removes duplicate content from English documentation
- Creates separated Brazilian Portuguese version
- Maintains consistent structure across both languages
- Ensures proper markdown formatting

fix(docs): remove duplication and organize documentation

…rage

BREAKING CHANGE: Complete transformer system implementation with comprehensive test coverage

feat: implement core transformation processors
- Add DateTransformer with timezone and format support
- Add ArrayTransformers (Flatten, Group, Key, Map)
- Add StringTransformers (Case, Mask, Slug, Template)
- Implement JsonTransformer and NumberTransformer

refactor: enhance core components and traits
- Optimize ArrayTransformerTrait for better performance
- Improve StringTransformerTrait with enhanced validation
- Strengthen type-safety across transformers
- Implement strict type declarations

test: add comprehensive test suites
- Core system tests (AbstractProcessor, Base Transformer)
- Array processing tests (Flatten, Group, Key, Map)
- String processing tests (Case, Mask, Slug, Template)
- Data handling tests (Date, JSON, Number)
- Composite operation tests (Chain, Conditional)
- Trait implementation tests

fix: improve error handling
- Add specialized DateTransformerException
- Enhance validation mechanisms
- Implement proper error messaging
- Add type validation safeguards

docs: update documentation
- Add PHPDoc blocks
- Include usage examples
- Document error scenarios
- Add type declarations

feat(transformer): implement data transformation system and test cove…