CI: check submission basics

This CI check ensures that S-o-b tags are present in each commit, there
are no fix-up commits, and that the merge request allows edits from
maintainers.

See https://freedesktop.pages.freedesktop.org/ci-templates/ci-fairy.html

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2 jobs for !5 with mr/ci in 5 minutes and 14 seconds (queued for 8 seconds)
latest merge request