支持 iOS Live Activity 提示下一节课上什么 #172
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这份代码实现了基础的 iOS Live Activity（iOS 17.2+）。
目前的逻辑是这样的：Widget 被系统唤醒进行 Refreshing 的时候（约 15-60min 唤醒一次）会判断距离下一节课还剩多久，如果是 0-30 分钟内，且先前没有唤醒过，则尝试启动 Live Activity。
但是调试过程中一直遇到 unsupportedTarget，查阅了一些资料，可以确定 Info.plist 等配置没有问题，唯一能解释的就是 Apple 禁止 Widget 自唤醒 LiveActivity（部分说明要求唤醒 LiveActivity 时 App 在前台）
鉴于后续重心不在这个项目上，我先提交这份在硬盘中的代码，留给后面的同学看看能不能完成。
另一个策略：参考这份 demo，利用 Expo Modules API 桥接 JS 和 Swift，实现 app 内调用 LiveActivity 唤醒。