Create a service definition for Zoekt
Relates to https://gitlab.com/gitlab-com/gl-infra/capacity-planning-trackers/gitlab-com/-/issues/1701 and gitlab-com/runbooks!7308 (closed).
Zoekt is present in the service catalog, however, we don't have a service definition for it like we do for other services. Therefore we don't have capacity warnings being generated specifically for this service.
The path of least resistance is to introduce a new saturation point, but this solution should be later replaced by the service definition, thus tracking all the zoekt resources eventually.