app :: App :: assets_dir=
The asset folder should be located relative to the executable at ../assets/.
This value can be redefined to change the expected location.
	# Path to the expected location of the asset folder of this program
	#
	# The asset folder should be located relative to the executable at `../assets/`.
	# This value can be redefined to change the expected location.
	var assets_dir: String = sys.program_name.dirname / "../assets/" is lazy
					lib/linux/linux.nit:24,2--28,73