NERtcLiveStreamState constructor Null safety

1. netease_roomkit
2. netease_roomkit
3. NERtcLiveStreamState
4. NERtcLiveStreamState constructor

NERtcLiveStreamState class

1. Constructors
2. NERtcLiveStreamState
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Constants
12. imageError
13. pushFail
14. pushing
15. pushStopped