POC implementation for easy bootstrapping of K8s integrations

This issue is to track a POC implementation of the flow described in the epic Easy bootstrapping of k8s functionality with th... (&12594 - closed)

Questions to answer

• Does the flow actually works? What are the biggest issues and possible workarounds?
• Can the flow be (almost) idempotent?
  • almost = from the user's perspective it's idempotent and does not mean stop anything, but it might refresh the tokens used for various parts of the integration
• What APIs are missing?

Not in scope

• CI setup as described in the epic
• renovate bot setup as described in the epic
• implementing any missing API