Package the tested Asahi Steam launcher as omarchy-steam-fex, with
runtime-only dependencies and offline launcher checks in makepkg.
Preserve the original launcher behavior and document its runtime
requirements and downstream ownership handoff.
Co-authored-by: dl-alexandre <166029845+dl-alexandre@users.noreply.github.com>
Co-authored-by: Santeri Hernejärvi <santeri@santeri.se>