Merge branch 'jmd/add-workhorse-shortcut' into 'main'

Add a service shortcut for gitlab-workhorse

See merge request https://gitlab.com/gitlab-org/gitlab-development-kit/-/merge_requests/3405



Merged-by: Toon Claes <toon@gitlab.com>
Approved-by: David Dieulivol <ddieulivol@gitlab.com>
Approved-by: Toon Claes <toon@gitlab.com>
Co-authored-by: John McDonnell <jmcdonnell@gitlab.com>