Remove the `-tooling` cluster from the production project

Created by: pecigonzalo

The tooling k8s cluster is currently in the production project, we should move this cluster to a separate project.

We could reuse and existing cluster or create a new cluster and project for this.

Tasks

• Discover connecting resources
• Backups resources
• Decide if share a k8s cluster or utilize a new one
• Migrate resources
• Document these services
  • https://about.sourcegraph.com/handbook/engineering/distribution/github_enterprise_testing_instance
• Delete old resources