feat: finalizers for proper CRD cleanup #51
Description
Summary
Add finalizers for proper cleanup when CRDs are deleted.
Scope
- CertificateAuthority: optionally clean up CA Secrets and PVC
- Certificate: clean up TLS Secret
- Config: clean up generated ConfigMaps, Secrets, ServiceAccount
- Server: clean up Deployment, HPA
- Pool: clean up Service, TLSRoute
Refs #34