Extend CLI

[tippfehlr]

• close The Rustfmt.toml does not match the code #285 by commenting out the threshold
• ferium add should accept multiple mods (Add multiple mods at once #175):
  • The command still exits with a non-0 exit code when failing to add a mod, but still adds the other mods before.
  • To differentiate between mods and dependencies I indented the deps
  • When adding an already existing mod the message should be green
  • to comply with the integration test, it still exits non-0
  • the overwrite flags are applied to all mods as I think that is the expected behavior.
• ferium list -e/--export prints mod ids without formatting to be imported later
  • you can do ferium list -e > modlist, then switch profile/pc and then do ferium add $(cat modlist) (on linux)
  • add doc comment
• ferium upgrade -l/--less hides, eg. doesn’t print all compatible mods, only showing those that actually get updated. (I have ferium upgrade -l in my upgrade script)
• add search functionality like paru
• easily add popular mods (like on the Modrinth start page)
  • maybe ferium search --popular
• add ferium install to add + download only that mod (Improve remove, upgrade, list, etc commands' interface (e.g. glob patterns to specify mods) #163)
  • should accept multiple mods
  • when already added, should download them
• fix ferium remove: Doesn’t remove the mod properly. ferium remove <mod> works.
• remove mods by id (Allow removal of mods using their project IDs too #266)
• MAYBE: add --dry-run (Confirm with the user before downloading mods #162) OR add y/n question + -f/--force (Dry-runs, an upgrade confirmation prompt, and an option to view the changelog #49)

[CLAassistant]

All committers have signed the CLA.

[tippfehlr]

The CLA is a bit demanding, don’t you mean? I give up all my copyright so you can do what you want with my code 🤔

[theRookieCoder]

The main reason for the CLA was that we were planning to change the licencing, but we haven't gotten around to that yet.

[tippfehlr]

I started to split this overambitious PR into smaller actually manageable PRs. I will close it at some time.

[tippfehlr]

I am closing this because I probably won’t implement it. Also, this PR would be way to large and two features are already in PRs in #321 and #323.