Merge branch '520360-geo-replicables-api-add-count-field' into 'master'

Add a limited count field to registries

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183189



Merged-by: Aakriti Gupta <agupta@gitlab.com>
Approved-by: Achilleas Pipinellis <axil@gitlab.com>
Approved-by: Scott Murray <smurray@gitlab.com>
Approved-by: Luke Duncalfe <lduncalfe@gitlab.com>
Approved-by: Aakriti Gupta <agupta@gitlab.com>
Reviewed-by: Scott Murray <smurray@gitlab.com>
Co-authored-by: c_fons <cfons@gitlab.com>