Ship native libraries for Android

[mrousavy]

I'm working on a native C++ Android app, where I want to use Filament from C++. I understand there's a Gradle library which ships a .aar file, but this does not work for me because:

1. There are no headers included in the filament-android library
2. I have to manually extract the .so files from the .aar file using a Gradle script (which is just a bit annoying)

It would be great to have prefab support for the Android library so that both headers are included in the lib, and the lib could be used directly without manual .aar extraction.

[romainguy]

Those .so files are not what you want anyway since they only export JNI symbols and not the Filament symbols.