Add support to use ks image in the kubectl admin of KubeSphere

[LinuxSuRen]

Currently, you can use the following command to archive that. But I believe that it can be easier.

ks -n kubesphere-controls-system set image deploy kubectl-admin kubectl=surenpi/ks:v0.0.26

For example, we can use do it like: ks config use-ks

[LinuxSuRen]

Here's an example to use ks in KubeSphere kubectl console page: