[BUG] Fail to resolve the api client from a given kubeconfig

[dashanji]

Describe the bug

Deploy graphscope in the spefic kubernetes cluster via kubeconfig

import graphscope
sess = graphscope(k8s_client_config="/opt/kubeconfig")

Get the error

RuntimeError: Resolve kube api client failed.

Update the args and get the right result.

sess = graphscope.session(k8s_client_config={"config_file": "/opt/kubeconfig"})

Expected behavior
Expose the config_file for users only and the session needs to construct the dict.