Song pre-processing

• added a new playback variant that mixes all notes of a song into single audio segments on the client
• those segments are then streamed, similar to background music
• active by default
• allows to play songs with a lot of simultaneous notes (Vanilla only support up to 247 sounds on most setups)
• doesn't suppress vanilla sounds when playing songs with a lot of notes
• very accurate note timings (48000 Hz)
• includes a high quality compressor and a cubic resampler for good sound quality

API and settings

• add API for controlling the playback variant and stereo mixing mode from the server
• add client settings and config for overriding the playback variant and stereo mixing mode to use
• add volume, playback variant and stereo mode as optional arguments for the /music play command

General

• inhibit Minecraft music from playing while notica songs are playing
• now depends on cloth-config

Bugfixes

• fix individual note playback tempo errors for songs with fractional tempo (the playback variant from before thats also vanilla compatible)
• use correct stereo panning according to the NBS specification
• song handles are now correctly destroyed when a listening player leaves the server
• fix infinite song request and response bug that caused the rate limiter to spam messages