Set lastSyncTime annotation on Custom Resources

[rafalgalaw]

What steps did you take and what happened?

It would be cool to have a lastSyncTime annotation in our crds. Previously we had such field in our pool.Status which caused countless reconcile loops.

What did you expect to happen?

Set annotation like in the following reference implementation:
kubernetes-sigs/cluster-api

garm version

v0.1.3

garm-operator version

v0.1.0

Kubernetes version

Kubernetes 1.25.5

Anything else you would like to add?

No response

[bavarianbidi]

I like the idea for having this information reflected back into CR (especially in combination with a custom kube-state-metrics configuration it should be quite easy to expose the last reconciliation Timestamp of the CR via a metric)