ci: add jobs for releasing
This adds a job for creating a release tarball as well as releasing it in the deploy stage. This is the new release process for GNOME modules.
While at it, the jobs were sorted by stage.
see https://discourse.gnome.org/t/releasing-gnome-modules/25566 and https://handbook.gnome.org/maintainers/release-pipeline.html
Edited by Markus Göllnitz