Added Loop Points to the Boo Menu and Pack Support

Only put this commit here since A: It's related to the BGM files, and B: It's dependent on the previous commit.

Scripts/UI/BooRaceMenu.gd

@@ -56,6 +56,7 @@ func _ready() -> void:
 	Level.can_set_time = true
 	setup_visuals()
 	%LevelLabels.get_child(BooRaceHandler.current_level_id).grab_focus()
+	$Music.play()
 
 func _exit_tree() -> void:
 	Global.get_node("GameHUD").show()