ULTRAKILL main menu music

Changes the music in the main menu to [The Fire Is Gone](https://www.youtube.com/watch?v=917xijnpJVw) from the game [ULTRAKILL](https://store.steampowered.com/app/1229490/ULTRAKILL/) I recommend setting the music frequency to constant and download [ULTRAKILL PACK](https://modrinth.com/resourcepack/ultrakill-pack)