task: to refine this issue here for spport per-CRD FGA-Relation Configuration

[mirzakopic]

An ADR may also be needed here.

• Propose a custom resource with a spec that the security operator can read during schema generation, so relations are adjusted accordingly.
• Provide extensibility such that we can add 2–3 entirely new relations to OpenFGA that aren't tied to the Kubernetes ecosystem but still need to be represented in OpenFGA.