Re-implement multi-volume imports in vc_packager

[stephenrparsons]

What problem is your feature request solving?

Pull request #62 removed the ability to import multiple volumes with a single vc_packager command, so that it could change the volume information inputs from stdin to program arguments.

What is your feature request?

Reimplement this functionality using program arguments.

What alternative solutions have you considered?

No response

Is there anything else we should know that wasn't included already?

No response

Are you proposing to work on this feature yourself?

• [ ] I am willing to submit a pull request for this feature

Code of Conduct

• [X] I agree to follow this project's Code of Conduct