Feature request: Save settings

[Rycia]

Whenever BSMM closes (or crashes) the settings are never saved, such as what's selected under Miscellaneous if you want to have "reinstall installed mods" enabled or a custom folder path.

When opening it again, the custom path and any ticks made don't save.

You should try saving the user's settings to a json file or something as they are changed (not when the application is closed ect)

[affederaffe]

With https://github.com/affederaffe/BeatSaberModManager/commit/f7418e7aa7c0162b2ea4536e011ab5dc919c08d6, exceptions are caught globally, so settings should always be saved on exit. I'm not a fan of saving them on change since it introduces unnecessary IO.