Support for appComponentFactory is missing

[MarcMil]

Android apps can use a mechanism to use a factory to instantiate the application class, activities and other components. FlowDroid should support this in order to get obtain a more complete callgraph.

    <application android:appComponentFactory="androidx.core.app.CoreComponentFactory>

An example implementation usually used in Apps can be found at https://androidx.de/androidx/core/app/CoreComponentFactory.html