Airbridge constructor Null safety

1. airbridge_flutter_sdk
2. airbridge_flutter_sdk
3. Airbridge
4. Airbridge constructor

Airbridge class

1. Constructors
2. Airbridge
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static methods
12. clearDeviceAlias
13. clearUser
14. clearUserAlias
15. clearUserAttributes
16. clearUserEmail
17. clearUserID
18. clearUserPhone
19. click
20. createTrackingLink
21. createWebInterfaceScript
22. disableSDK
23. enableSDK
24. fetchAirbridgeGeneratedUUID
25. fetchDeviceUUID
26. handleWebInterfaceCommand
27. impression
28. isInAppPurchaseTrackingEnabled
29. isSDKEnabled
30. isTrackingEnabled
31. isUninstallTrackingNotification
32. registerPushToken
33. removeDeviceAlias
34. removeUserAlias
35. removeUserAttribute
36. setDeviceAlias
37. setOnAttributionReceived
38. setOnDeeplinkReceived
39. setUserAlias
40. setUserAttribute
41. setUserEmail
42. setUserID
43. setUserPhone
44. startInAppPurchaseTracking
45. startTracking
46. stopInAppPurchaseTracking
47. stopTracking
48. trackEvent