FaceSdkPlugin constructor Null safety

1. face_sdk
2. face_sdk
3. FaceSdkPlugin
4. FaceSdkPlugin constructor

FaceSdkPlugin class

1. Constructors
2. FaceSdkPlugin
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. nativeLibName
13. Static methods
14. createFacerecService