AppConfig constructor Null safety

1. farmershands
2. app_config
3. AppConfig
4. AppConfig constructor

AppConfig class

1. Constructors
2. AppConfig
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. appDisplayName
13. appFlavor
14. appIconPath
15. appIconWhitePath
16. code