CI: add arm64 builds #664

Job	Run time
CI (fedora, gmxpkg)	3m 21s
CI (fedora, rawhide, TAG=rawhide,PYTHON=python3.13, true)	3m 1s
CI (ubuntu, latest)	3m 4s
CI (ubuntu, intel, TAG=22.04,INTEL=yes, true)	4m 48s
CI (ubuntu, rolling, TAG=rolling)	2m 55s
CI (ubuntu, devel, TAG=devel, true)	3m 13s
CI (opensuse, latest, true)	2m 55s
CI (fedora, latest-amd64, GMX_BRANCH=release-2019,GMX_DOUBLE=ON)	7m 6s
CI (fedora, latest-arm64, GMX_BRANCH=release-2019,GMX_DOUBLE=ON, true)	6m 50s
CI (fedora, gmx2019, GMX_BRANCH=release-2019)	9m 16s
CI (fedora, gmx2024_d, GMX_BRANCH=release-2024,GMX_DOUBLE=ON)	11m 9s
CI (fedora, gmx2024, GMX_BRANCH=release-2024)	12m 0s
CI (fedora, gmx9999_d, GMX_BRANCH=main,GMX_DOUBLE=ON, true)	11m 27s
CI (fedora, gmx9999, GMX_BRANCH=main, true)	11m 56s
CI (fedora, nogmx, GMX_BRANCH=none)	2m 59s
CI (actions, latest)	28s
CI (format, latest)	54s
merge-docker-manifest	3s
	1h 37m 25s

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