Build a new Extended Job Manager Operator

Build a new operator that deploys the kueue solution from https://github.com/kubernetes-sigs/kueue.

Acceptance Criteria:

• the new operator is deploying the whole kueue stack
• the operator repo has a CSV definition (i.e. manifests directory)
• the operator has a CRD for the operator configuration
• the operator image can be built (through Dockerfile.rhel7)

The new operator is going to be a combination of https://github.com/openshift/cluster-resource-override-admission-operator and https://github.com/openshift/secondary-scheduler-operator.

TODO:

• when the operator is uninstalled, the underlying installed/owned resources are deleted (and all other secondary resources get deleted). One needs to properly set the owner reference to all secondary resources to point to the operator deployment.
• make the RBAC rules set as restricting as possible
• validate all dependent components are present (e.g. kube-scheduler)