FastQuit

Finally got around to getting FastQuit 3.0.0 out of beta!

- rewrote config system (now uses Cloth Config API)
   - if you are updating from 2.x or older you will have to reconfigure your FastQuit options
- added a new option "Allow multiple running Worlds", if disabled you won't be able to join a new singleplayer world until the one in the background has finished saving
  - this is to prevent some mod conflicts and will automatically disable itself when an incompatible mod is detected
  - fixes an issue with Quilt Standard Libraries
- added some new translations:
  - Estonian (thanks Madis0)
  - Traditional Chinese (thanks notlin4)
  - Ukrainian (thanks BurrConnie)
  - Vietnamese (thanks ImVietnam)
- updated some translations:
  - Simplified Chinese (thanks GodGun968)
  - Italian (thanks Oondanomala)

Please note that some of these translations were made before newer updates and might be incomplete.