game: add enemy taunt on death

scenes/managers/enemy_manager.gd

@@ -12,6 +12,7 @@ var enemy_scene = preload("res://scenes/enemies/enemy.tscn")
 func _ready() -> void:
 	timer.wait_time = spawn_rate / 1
 	timer.start()
+	GlobalConst.sig_stop_spawning.connect(_on_stop_spawning)
 
 
 func _on_timer_timeout() -> void:
@@ -22,3 +23,9 @@ func _on_timer_timeout() -> void:
 		new_enemy.position = target.position + Vector2(50, 50)
 		new_enemy.target = target
 		add_child(new_enemy)
+		
+func _on_stop_spawning(val: bool):
+	if val:
+		timer.stop()
+	elif timer.is_stopped():
+		timer.start()