feat: 添加升级面板到arena，添加全局事件监听升级选择

scenes/unit/players/player.gd

@@ -96,6 +96,11 @@ func can_dash() -> bool:
 func is_facing_right() -> bool:
 	return visuals.scale.x == -0.5
 	
+func update_player_new_weave() -> void:
+	stats.health += stats.health_increase_per_wave
+	health_component.setup(stats)
+	
+
 func _on_dash_timer_timeout() -> void:
 	is_dashing = false
 	visuals.modulate.a = 1.0