The Cirrus-CI configuration for this repository is setup to execute test
builds on certain important release branches. There is no built-in way
to monitor these for success or failure. This commit adds a
Github-Actions Workflow to e-mail the podman-monitor list if any fail.
Otherwise it will take no action if everything is successful.
Note: This duplicates 99.999% of the same YAML used for the Buildah
repository. The only changes were for the settings URL and
mentioning "skopeo" in a comment. A similar workflow is also in use
on the Podman repository.
Signed-off-by: Chris Evich <cevich@redhat.com>