Add a Activity lifecycle listener

https://github.com/adobe/aepsdk-core-android/blob/34445fd339abaad16d2c5c12b41ec9db52468929/code/android-core-library/src/phone/java/com/adobe/marketing/mobile/services/internal/context/App.kt#L58

Now we only need to listen to the resume action of the app activities, if we want to listen to other activity actions, we can create an interface for extensions to monitor the activity lifecycle.