Please add support export Godot Game to Android AAR file for AD SDK integrate.

[lefay1982]

Godot version:
3.1

OS/device including version:
Android

Issue description:

Please add support export Godot Game to Android AAR file.
Some custom AD SDK must done by other sdk's department, and modify frequency.
if godot cannot export to aar file, The integrate AD SDK task must be done by Game Program Engineer.
It's waste time for Game Program Engineer.

[lefay1982]

When I program with Libgdx.
I can proguard code and export core game project to a jar, named game.jar .
this jar can send to other android engineer to integrate AD SDK and export to Android APK.
They can integrate many AD SDKs, and can export to many APKs with different android market version .

[akien-mga]

@m4gr3d Did #31919 solve this issue?

[m4gr3d]

@akien-mga yes it does.

Running the following command will generate an Godot aar archive file in the platform/android/java/lib/build/outputs/aar directory:

cd platform/android/java
./gradlew :lib:build