[Feature]: Support cluster operation resource like tenant operation

[powerfooI]

Describe your use case

It is common that users modify topology and parameters of a OBClsuter, which is perhaps more common than what users do to OBTenant. Small single jobs like update parameters, change topology, upgrade cluster should be supported with a single auxiliary resource like OBClusterOperation.

Describe the solution you'd like

Create a new CRD naming OBClusterOperation, which contains parameter modification, topology modification, cluster upgrading and any other operational tasks. Make OBClsuter thinner.

Describe alternatives you've considered

No response

Additional context

No response