Automatic merge from submit-queue

Kubelet: add kubeGenericRuntimeManager for new runtime API

Part of #28789. Add `kubeGenericRuntimeManager` for kubelet new runtime API #17048. 

Note that:

- To facilitate code reviewing, #28396 is splited into a few small PRs. This is the first part.
- This PR also fixes some syntax errors in `api.proto`.
- This PR is depending on #29811 (already merged).

CC @yujuhong @Random-Liu @kubernetes/sig-node