Photos system app | 系统相册应用
Implementation of media library | 媒体库功能实现
JS UI framework | JS UI开发框架
Implementation of image processing | 图片编解码功能实现
Providing traditional input methods, such as key, touch, keyboard, and mouse inputs | 提供传统的输入交互方式，例如按键、触控、键盘、鼠标等
Settings system app | 系统设置应用
Storing declaration files for JavaScript APIs | JavaScript API 公共仓，存放 d.ts 声明文件
