Resource Manager used to manage resources placed in the res folder of the app

Property definitions

android :: assets_and_resources $ App :: resource_manager=
	# Resource Manager used to manage resources placed in the `res` folder of the app
	var resource_manager: ResourcesManager is lazy do
		var res = native_context.resources
		var pkg = native_context.package_name
		return new ResourcesManager.native(res, pkg.to_s)
	end
lib/android/assets_and_resources.nit:405,2--410,4