Add a GitHub action for building nightly images

Created by: LinuxSuRen

What type of PR is this? /kind cleanup

What this PR does / why we need it: You can give more details about why I create this PR from https://github.com/kubesphere/kubesphere/pull/3228

Which issue(s) this PR fixes: None.

Special notes for reviewers:

Additional documentation, usage docs, etc.: