feat: added ujust toggle-release command

[damiankorcz]

Description

This implements the feature mentioned in #251. I've tested it locally on my bluefin-nvidia install.

Usage

• Run ujust toggle-release to get a selection menu of available releases. Enter on the release you want and it should trigger an appropriate rpm-ostree rebase for your current image.
• Run ujust toggle-release <option> to directly run the rebase; skipping the selection menu e.g. ujust toggle-release 39. Available options:
  • latest
  • gts
  • 40
  • 39
  • 38
• Selecting the same release as currently installed will result in a message You are already on this release! and it will exit the script.
• Run ujust toggle-release help to see the description on how to use this command.

[castrojo]

Thanks for working on this! Ideally I think we'd want to poke at ghcr.io with skopeo to get the latest versions instead of putting the versions in the justfile, but this will do the job!

(I'll let the others chime in with reviews, thanks again!)

[damiankorcz]

Note to self: Run the just --unstable --fmt -f command on the file before submitting 😅

[castrojo]

Dang I totally forgot about this issue: https://github.com/ublue-os/bluefin/issues/832