AccountSelector constructor Null safety

1. nevis_mobile_authentication_sdk
2. nevis_mobile_authentication_sdk
3. AccountSelector
4. AccountSelector constructor

AccountSelector class

1. Constructors
2. AccountSelector
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. selectAccount
9. toString
10. Operators
11. operator ==