Enhance command with defaults and modes for all volumes

[2e3s]

I've used the script as a template for my own needs to migrate servers, sharing it for anyone's convenience.

• Adding default values for some arguments
• Adding create-all mode to save all volumes into a single archive
• Adding restore-all mode to restore all volumes from the archive

[junedkhatri31]

Thanks for the pull request. I've updated the code. Can you please take merge and fix conflicts

[junedkhatri31]

Also, I don't feel this is the right direction for the simple command. I think it will just add unnecessary complexity. There can be a wrapper command which use this command to backup and restore all volume. But backing up all volumes shouldn't be part of this command.