[PRQ#51623] Merge Request for resvg-qt

MarsSeed [1] filed a request to merge resvg-qt [2] into resvg [3]: Submitter has unified their former separate backend-specific builds of resvg inside the latter PKGBUILD, which now optionally supports all viable backends. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/resvg-qt/ [3] https://aur.archlinux.org/pkgbase/resvg/