code_generation/constructor_generation library

1. messages_builder package
2. documentation
3. code_generation/constructor_generation.dart

messages_builder package

1. Libraries
2. arb_parser
3. builder
4. code_generation/class_generation
5. code_generation/code
6. code_generation/constructor_generation
7. code_generation/field_generation
8. code_generation/generation
9. code_generation/import_generation
10. code_generation/library_generation
11. code_generation/method_generation
12. generation_options
13. message_parser/icu_message_parser
14. message_parser/message_parser
15. message_parser/plural_parser
16. message_parser/select_parser
17. message_with_metadata