Get a drawable from res/drawable folder

Property definitions

android $ ResourcesManager :: drawable
	# Get a drawable from `res/drawable` folder
	private fun drawable(name: String): NativeDrawable do
		sys.jni_env.push_local_frame(3)
		var return_value = android_resources.get_drawable(android_resources.get_identifier(name.to_java_string, "drawable".to_java_string, app_package.to_java_string))
		sys.jni_env.pop_local_frame
		return return_value
	end
lib/android/assets_and_resources.nit:274,2--280,4