add rocketmq api resource

[linjiemiao]

FEATURE REQUEST

1. rocketmq-operator needs to add a rocketmq resource, which is the parent resource of broker, nameserver, transfer and other resources. If you do this, operator structure is more clearer and controllable.

We can contribute those code

[jackios]

my problem as follow [root@k8s-master01 rocketmq-operator]# kubectl apply -f example/rocketmq_v1alpha1_nameservice_cr.yaml The NameService "name-service" is invalid: spec.storageMode: Invalid value: "string": spec.storageMode in body must be of type HostPath: "string"

I have no problem executing on the test machine，but I have this format problem on the same version of the machine

[caigy]

@linjiemiao Good idea! Would you like to submit a PR?

[drivebyer]

still need this