Refactors player preferences for modularity + SQLite Unit Test (#37615)

* Pref code refactor

* Empty database reference

* Unit testing SQLite

* Everything else

* Disable unit testing.

* Equivalent

* more robust unit tests

code/modules/bayinstruments/sound_player.dm

@@ -88,7 +88,7 @@
 			if (some_hearer.ear_deaf > 0)
 				continue
 //			var/dist = get_dist(some_hearer, src)
-			if (!some_hearer.client.prefs.hear_instruments)
+			if (!some_hearer.client.prefs.get_pref(/datum/preference_setting/toggle/hear_instruments))
 				continue
 			present_listeners += some_hearer
 			last_updated_listeners = world.time
@@ -103,4 +103,4 @@
 	// Cease playing
 	return 0
 
-#undef REFRESH_FREQUENCY
+#undef REFRESH_FREQUENCY