feat: Add shell access to nodes

Created by: lynxcat

What type of PR is this?

/kind feature

What this PR does / why we need it:

This function can make it easier for us to manage the edge host, such as

• Download Image before updating edge application
• Update edgecore or docker at the edge
• Modify the edge host configuration
• ...

Which issue(s) this PR fixes:

Fixes # issue: kubesphere#4569

Special notes for reviewers:

None

Does this PR introduced a user-facing change?

added a button in nodes page

None

Additional documentation, usage docs, etc.:

None