domain/feature_toggle_entry_model library

1. rdev_feature_toggles package
2. documentation
3. domain/feature_toggle_entry_model.dart

rdev_feature_toggles package

1. Libraries
2. application/feature_toggles_data_service
3. application/feature_toggles_service
4. domain/feature_toggle_entry_model
5. domain/feature_toggle_model
6. domain/feature_toggle_vo