Followup on #19477
Remove commented out cirrus task for fcos image build with podman-next
and add 2 github actions: 1 for running a simple uni-arch image build
on every PR and another to actually build multiarch images and push to
quay after merge.
`podman --version` will also include git short sha for clarity.
[NO NEW TESTS NEEDED]
Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>
fa71504518