Director constructor Null safety

1. millicast_flutter_sdk
2. millicast_flutter_sdk
3. Director
4. Director constructor

Director class

1. Constructors
2. Director
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static methods
12. getEndpoint
13. getLiveDomain
14. getPublisher
15. getSubscriber
16. parseIncomingDirectorResponse
17. setEndpoint
18. setLiveDomain