微信小程序添加卡券到微信卡包,使用wx.addCard，方法传参及整体流程

https://developers.weixin.qq.com/miniprogram/dev/api/open-api/card/wx.addCard.html

参考：https://mp.weixin.qq.com/cgi-bin/announce?action=getannouncement&key=1490190158&version=1&lang=zh_CN&platform=2

https://www.cnblogs.com/lxlin/p/10844145.html

参考：https://www.cnblogs.com/zy20160429/p/7827159.html

https://blog.csdn.net/czx0132/article/details/106986402?utm_medium=distribute.pc_relevant.none-task-blog-OPENSEARCH-2.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-OPENSEARCH-2.channel_param