[common] Move Traefik CRs to Common

[PrivatePuffin]

Is your feature request related to a problem?

Currently only the Traefik chart can spawn CRs, such as middlewares.
How-ever, in practice we would want all CRs in common, for standardization and to prevent repeat code.

Having them in Traefik has come to haunt us a few times when we updated templating standards and forgot we had custom CRs defined in Traefik.

Describe the solution you'd like

We should instead move the CR rendering to common, which allows us to implement more common-templating on them. But also allow all apps to spawn them.

Describe alternatives you've considered

Keep things as-is

Additional context

No response

I've read and agree with the following

• I've checked all open and closed issues and my request is not there.
• I've checked all open and closed pull requests and my request is not there.