fix(api): deprecate FlightRecorder and Recording CRDs

[ebaron]

The CRD spec has properties for whether a version is deprecated and a warning string to show the user when they try to use that version. Newer controller-tools versions support these properties using marker comments, but this requires Operator SDK 1.10 and we're still quite a bit behind that (see #287). In the meantime, I've added Kustomize patches to add these properties.

Example:

$ kubectl get recording
Warning: operator.cryostat.io/v1beta1 Recording is deprecated; please use the Cryostat web application or the Cryostat HTTP API to manage recordings
No resources found in cryostat-operator-system namespace.

I didn't see this have an effect in the UI, so I've added the operators.operatorframework.io/internal-objects annotation to our CSV. This results in the FlightRecorder and Recording APIs being hidden from the OpenShift Console's operator UI. The functionality remains available via command line or through the CustomResourceDefinitions page in the OpenShift Console.

Bundle for testing:

make deploy_bundle BUNDLE_IMG=quay.io/ebaron/cryostat-operator-bundle:deprecate-api-01

Fixes: #349

[hareetd]

Works well.