extensions/extensions library

1. better_networking package
2. documentation
3. extensions/extensions.dart

better_networking package

1. Libraries
2. better_networking
3. consts
4. extensions/extensions
5. extensions/map_extensions
6. models/auth/api_auth_model
7. models/auth/auth_api_key_model
8. models/auth/auth_basic_model
9. models/auth/auth_bearer_model
10. models/auth/auth_digest_model
11. models/auth/auth_jwt_model
12. models/http_request_model
13. models/http_response_model
14. models/models
15. services/http_client_manager
16. services/http_service
17. services/services
18. utils/auth/digest_auth_utils
19. utils/auth/handle_auth
20. utils/auth/jwt_auth_utils
21. utils/content_type_utils
22. utils/graphql_utils
23. utils/http_request_utils
24. utils/http_response_utils
25. utils/string_utils
26. utils/uri_utils
27. utils/utils