example: 這將獲取所有的版本
https://api.github.com/repos/januwA/flutter_anime_app/releases
最新版本:
https://api.github.com/repos/januwA/flutter_anime_app/releases/latest
下載最新的包
https://api.github.com/repos/januwA/flutter_anime_app/releases/latest // 獲取下載地址: r.assets[0].browser_download_url