This PR adds a new "--install-android-build-template" command-line option which causes the android build template to be installed before exporting the project.
OS::get_singleton()->print(" The target directory must exist.\n");
OS::get_singleton()->print(" --export-debug <preset> <path> Export the project in debug mode using the given preset and output path. See --export-release description for other considerations.\n");
OS::get_singleton()->print(" --export-pack <preset> <path> Export the project data only using the given preset and output path. The <path> extension determines whether it will be in PCK or ZIP format.\n");
OS::get_singleton()->print(" --install-android-build-template Install the android build template. Used in conjunction with --export-release or --export-debug.\n");