add_intl/add_intl library

1. ajmancli package
2. documentation
3. add_intl/add_intl.dart

ajmancli package

1. Libraries
2. add_intl/add_intl
3. app_api/add_api
4. app_api/generate_entities
5. app_api/generate_models
6. app_api/templates/entity/api_content_entity
7. app_api/templates/entity/api_list_value_entity
8. app_api/templates/entity/api_request_entity
9. app_api/templates/entity/api_response_entity
10. app_api/templates/model/api_content_model
11. app_api/templates/model/api_list_value_model
12. app_api/templates/model/api_model
13. build/build
14. constants/enums/command_enum
15. constants/enums/flag_enum
16. constants/enums/option_enum
17. constants/tool_string
18. gen_page/gen_page
19. gen_page/templates/page_template
20. gen_page/templates/page_view_model_template
21. gen_page/templates/page_view_template
22. utils/cli_arg_parser
23. utils/common_utils
24. utils/text_utils