LogConstants constructor Null safety

1. farmershands
2. log_constants
3. LogConstants
4. LogConstants constructor

LogConstants class

1. Constructors
2. LogConstants
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Constants
12. buttonTap
13. changeScreen
14. graphRowTap
15. info
16. menuTap
17. nonScreen
18. screenTap