yjy_pax_self_service_platform_interface library

1. yjy_pax_self_service package
2. documentation
3. yjy_pax_self_service_platform_interface.dart

yjy_pax_self_service package

1. Libraries
2. yjy_pax_self_service
3. yjy_pax_self_service_method_channel
4. yjy_pax_self_service_platform_interface