Ports a rewritten version of BAYSTRUMENTS (#11680)

* bay instruments

* k

* AAA

* remove that

* changes

* Update _instrument_key.dm

* safety nets

* @ghommie fixed

* volume

* Update item.dm

* Update item.dm

Co-authored-by: Ghom <42542238+Ghommie@users.noreply.github.com>

code/datums/looping_sounds/_looping_sound.dm

@@ -73,7 +73,7 @@
 	var/list/atoms_cache = output_atoms
 	var/sound/S = sound(soundfile)
 	if(direct)
-		S.channel = open_sound_channel()
+		S.channel = SSsounds.random_available_channel()
 		S.volume = volume
 	for(var/i in 1 to atoms_cache.len)
 		var/atom/thing = atoms_cache[i]