Fish Shell Completions

[er2]

Toolbox would be much more enjoyable to use with shell auto-completions.

It's much easier to hit tab with

toolbox create --distro ␉

and get available distros than to get an error and have to pull up docs.

I picked ubuntu since debian wasn't available. Then I needed a release. It would have been friendlier to suggest the latest LTS and ask me to confirm, BTW.

The syntax for release isn't obvious. I expected --release to take a nickname like jammy. Autocompletion would make this a non-issue.