Add a Activity lifecycle listener

[yangyansong-adbe]

aepsdk-core-android/code/android-core-library/src/phone/java/com/adobe/marketing/mobile/services/internal/context/App.kt

Line 58 in 34445fd

onActivityResumed: SimpleCallback<Activity>?

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.