https://developers.weixin.qq.com/minigame/dev/api-backend/open-api/data/storage.setUserStorage.html
前端文档好歹有个链接连过去 https://developers.weixin.qq.com/minigame/dev/api/open-api/data/wx.setUserCloudStorage.html
https://developers.weixin.qq.com/minigame/dev/api/open-api/data/KVData.html
文档有的哈：