The previously used file sharing api was restricted after Android N causing the engine to crash whenever used on devices running Android N or higher.
(cherry picked from commit b04c9a71f4)
This reverts commit 920639511d.
The changes are good, this revert is only done for release management reasons
as we want this feature to get more testing before making it in a stable build,
but a 3.2.3 release is imminent to handle some regressions in 3.2.2.
This will be re-committed in a 3.2-based feature branch, and we'll merge it
again once we're confident about it (probably for 3.2.4).
The application module `app` serves double duties of providing the prebuilt Godot binaries ('android_debug.apk', 'android_release.apk') and the Godot custom build template ('android_source.zip').