cli: add list command

[lstocchi]

The Podman Desktop extension should have access to a way to retrieve the VMs that has been created so that they can be listed

[lstocchi]

There is a draft for it -> https://github.com/cfergeau/macadam/pull/46
It worked fine for the extension demo but it was a copy/paste/cut from podman and i think it can be improved

[cfergeau]

#46 was merged.