微信小程序模板通知已停，需开发订阅消息实现通知功能
参考：
https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/subscribe-message.html
https://developers.weixin.qq.com/miniprogram/dev/api/open-api/subscribe-message/wx.requestSubscribeMessage.html
https://blog.csdn.net/weixin_44307065/article/details/104376313
