Wind-up Music Box

This mod adds a wind-up music box. Place it down and right-click it to wind it up! Shift-clicking it will open and close its lid. It can play custom songs from JSON (a GUI editor is currently being worked on). Thanks to [Aethyus](https://modrinth.com/user/Aethyus) for the textures and icon! Also thanks to freesound.org for the music box wind-up and note sounds (more info can be found on the metadata of the audio files).