Add option to clean remote folder when deleting nodes

[superstar54]

I want to clean the remote folder when I delete a node. For the moment, I need to find all the call jobs that are called by this node, and clean the workdir, and then delete the node.

It would be useful to add an option to clean the remote folders when deleting the node.

e.g., verdi node delete --clear-workdir <pk>

[khsrali]

Somehow related: #4693
would be nice while providing this feature, one would also address that issue.