Refactors sound groups to use decls instead of a massive switch with dozens of global lists. (#9702)

code/modules/tables/interactions.dm

@@ -189,7 +189,7 @@
 		var/obj/item/melee/energy/blade/blade = W
 		blade.spark_system.queue()
 		playsound(src.loc, 'sound/weapons/blade.ogg', 50, 1)
-		playsound(src.loc, "sparks", 50, 1)
+		playsound(src.loc, /decl/sound_category/spark_sound, 50, 1)
 		user.visible_message("<span class='danger'>\The [src] was sliced apart by [user]!</span>")
 		break_to_parts()
 		return