feat: Support multiple mod versions

This isn't fully complete, as it needs testing, ~~not to mention currently it only implements the new `enabledmods.json` format, and doesn't actually implement showing different versions of mods in the mod list.~~ Closes #259 #### TODO - [ ] Testing - [x] New `enabledmods.json` format - [ ] Wait for Northstar to add support ([NorthstarLauncher/#828](https://github.com/R2Northstar/NorthstarLauncher/pull/828), [NorthstarMods/#903](https://github.com/R2Northstar/NorthstarMods/pull/903)) - [x] Support for showing, toggling and removing separate installed versions of the same mod #### TESTING BUILDS Linux: [here](https://github.com/0neGal/viper/actions/runs/12589406053/artifacts/2380663371) Windows: [here](https://github.com/0neGal/viper/actions/runs/12589406053/artifacts/2380648711)