Add circle timer

scripts/item_generator/state/working.gd

@@ -17,9 +17,10 @@ func enter_from(state):
 	ctx.status_light.activate()
 	ctx.gen_timer.start()
 	ctx.emit_signal("gen_started")
+	ctx.circle_timer.set_timer(ctx.gen_timer)
 
 func exit_to(state):
-	pass
+	ctx.circle_timer.clear_timer()
 
 func update(delta):
 	var time_left : float = ctx.gen_timer.time_left