Add ci-fairy based templates

Add simple templates for checking the allow-collaboration checkbox and for
verifying the generated .gitlab-ci.yml is correct.

Just like GitHub actions, the templates are postfixed with the version in
case we need to change them in the future.

The prefix here is simply `.fdo@action@v1` because while we're using
ci-fairy here it gets long (and confusing) to use `.fdo.ci-fairy` and in the
end these aren't technically tied to ci-fairy anyway. Arguably, they should
be sitting in their own file.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
14 jobs for wip/ci-fairy-subtemplates in 2 minutes and 50 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Sanity Check
canceled #5749049
check commits

00:02:50

canceled #5749051
flake8 ci-fairy

00:02:48

canceled #5749050
pytest ci-fairy

00:02:49

canceled #5749048
sanity check

00:02:50

 
  Bootstrapping
canceled bootstrapping

 
  Distributions
canceled alpine

canceled arch

canceled centos

canceled debian

canceled fedora

canceled ubuntu

 
  Ci Fairy
canceled ci-fairy images

 
  Deploy
canceled #5749060
allowed to fail
check merge request

canceled #5749061
pages