NERoomLiveController constructor Null safety

1. netease_roomkit
2. netease_roomkit
3. NERoomLiveController
4. NERoomLiveController constructor

NERoomLiveController class

1. Constructors
2. NERoomLiveController
3. Properties
4. hashCode
5. isSupported
6. runtimeType
7. Methods
8. addAttachment
9. addLiveStreamTask
10. clearAttachments
11. getAttachment
12. getLiveInfo
13. noSuchMethod
14. removeAttachment
15. removeLiveStreamTask
16. startLive
17. stopLive
18. toString
19. updateLive
20. updateLiveStreamTask
21. Operators
22. operator ==