- Added comprehensive English documentation for all DI generator and support files:
* inject_generator.dart — full class/method doc-comments, usage samples
* module_generator.dart — doc-comments, feature explanation, complete example
* src/annotation_validator.dart — class and detailed static method descriptions
* src/type_parser.dart — doc, example for ParsedType and TypeParser, specific codegen notes
* src/bind_spec.dart — interface, static factory, and codegen docs with DI scenarios
* src/bind_parameters_spec.dart — details and samples for code generation logic
* src/metadata_utils.dart — full doc and examples for annotation utilities
* src/exceptions.dart — user- and contributor-friendly errors, structured output, category explanations
* src/generated_class.dart — usage-centric doc-comments, example of resulting generated DI class
- Removed Russian/duplicate comments for full clarity and maintainability
- Ensured that new and existing contributors can easily extend and maintain DI code generation logic
BREAKING CHANGE: All documentation now English-only; comments include usage examples for each principal structure or routine
See #docs, #generator, #cherrypick
