feat: grafana dashboard

[oliverbaehler]

Describe the feature

Currently we provide a lot of metrics but little Grafana dashboards. We should provide some built-in operational dashboards:

• Control-Dashboard: For all resources shows their Ready/Health condition. Essentially having an overview what's not working.
• Custom Quota Dashboard: Dashboard to validate to usage and availability of GlobalCustomQuotas and CustomQuotas

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 30 days.

[yindia]

@Svarrogh1337 If work on this hasn't started yet, I'm happy to take it. Assign it to me