Transition Feature Modules to Dynamic Delivery Modules

As of Android Studio 3.4 Beta 1, the Gradle sync started showing this warning:

WARNING: The com.android.feature plugin is deprecated and will be removed in a future gradle plugin version. Please switch to using dynamic-features or libraries. For more information on converting your application to using Android App Bundles, please visit https://developer.android.com/studio/projects/dynamic-delivery.
Affected Modules: base, sermons, startup

Thus, it is necessary to convert the application to support Dynamic Delivery modules, instead of deprecated Instant App modules:

• Combine the installed, instant, base, and startup modules into a new instant, startup module called app
• Keep sermons as a separate module, just transition it to the new dynamic delivery instant app convention
• Fix all inter-module routing

References:

• https://developer.android.com/topic/google-play-instant/getting-started/instant-enabled-app-bundle
• https://developer.android.com/studio/projects/dynamic-delivery
• https://github.com/googlesamples/android-dynamic-features