[PRQ#58950] Merge Request for subsurface

ohli [1] filed a request to merge subsurface [2] into subsurface-git [3]: As subsurface changed their release strategy to weekly builds [^1] and provides AppImages, this AUR package became useless. [1] https://aur.archlinux.org/account/ohli/ [2] https://aur.archlinux.org/pkgbase/subsurface/ [3] https://aur.archlinux.org/pkgbase/subsurface-git/