First deployable version of tenant controller

[GabriFila]

Description

This PR includes:

• management of inconsistent workspaces, by adding the field inconsistenWorkspaces to the status of the tenant
• allows for the automatic unsubscription of a tenant from a workspace when the latter gets deleted
• adds automatic generation of the needed Kubernetes resources to allow the correct consumption of templates and instances
• renames the admin concept to powerUser
• adds a description equal to the pretty name of a workspace for better visualization in keycloak

How Has This Been Tested?

At the current state, this PR doesn't add the proper testing, just the minimum for the test to run properly

[kingmakerbot]

Hi @GabriFila. Thanks for your PR.

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Make sure this PR appears in the CrownLabs changelog, adding one of the following labels:

• kind/breaking: 💥 Breaking Change
• kind/feature: 🚀 New Feature
• kind/bug: 🐛 Bug Fix
• kind/cleanup: 🧹 Code Refactoring
• kind/docs: 📝 Documentation

[frisso]

Gabriele, this PR looks great!
I would suggest to document a little bit more what you intent with "inconsistent" workspace, which does not look obvious to me.

[giorio94]

/lgtm

[giorio94]

/merge

[kingmakerbot]

Your staging environment has been correctly teared-down!