Merge branch '410327-add-aggregation-metrics-to-vsa-api' into 'master'

Expose VSA metrics via GraphQL

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/152029



Merged-by: charlie ablett <cablett@gitlab.com>
Approved-by: charlie ablett <cablett@gitlab.com>
Reviewed-by: Felipe Artur <fcardozo@gitlab.com>
Reviewed-by: charlie ablett <cablett@gitlab.com>
Reviewed-by: Lorena Ciutacu <lciutacu@gitlab.com>
Co-authored-by: Adam Hegyi <ahegyi@gitlab.com>