ResourceOwner constructor Null safety

1. conduit_core
2. conduit
3. ResourceOwner
4. ResourceOwner constructor

ResourceOwner class

1. Constructors
2. ResourceOwner
3. Properties
4. hashCode
5. hashedPassword
6. id
7. runtimeType
8. salt
9. username
10. Methods
11. noSuchMethod
12. toString
13. Operators
14. operator ==