Option for `nelm release install` to copy files from container to host in the end

[ilya-lesikov]

Before proceeding

• I didn't find a similar issue

Problem

No easy way to copy files from containers to host after running werf converge.

Solution (if you have one)

No response

Additional information

werf kube-run already has --copy-to and --copy-from for this.

Refs: werf/werf#3691