Ferium: download ældre versioner

- Linux ARM without a GUI file dialogue
- Linux ARM (aarch64 linux musl)
- Linux without a GUI file dialogue
- Linux (x64 linux musl)
- macOS Apple Silicon (aarch64 darwin)
- macOS Intel (x64 darwin)
- GNU Windows (x64 windows gnu) (i.e.
Cygwin/MinGW)
- Windows (x64 windows msvc)

You can now add multiple mods at once! ([#175](https://github.com/gorilla-devs/ferium/issues/175))

- Features
- Adding mods has been significantly improved
- No matter how many mods you add, there will only be a maximum of 3 network requests (for each platform)
- The `--ignore-game-version` and `--ignore-mod-loader` flags will only work when adding a single mod, since these are meant for fine-tuning

- Bug Fixes
- Fix `No such file or directory (os error 2)` when downloading some specific modpacks ([#402](https://github.com/gorilla-devs/ferium/issues/402))
- Fix issues with the active profile/modpack index changing when deleting profiles/modpacks
- Fix `--ignore-mod-loader` not working with curseforge mods ([#417](https://github.com/gorilla-devs/ferium/issues/417))
- Fix stack overflows on the Windows GNU build ([#377](https://github.com/gorilla-devs/ferium/issues/377))

- Internal Changes
- Use `.eq_ignore_ascii_case()` where appropriate
- Use `anyhow::ensure!()` where appropriate
- Use `.ok_or_else()` where appropriate
- Replace `!__.is_relative()` with `.is_absolute()`