WPF 显示 GIF 动画图片
参考：WPF 开源gif控件WpfAnimatedGif的使用方法
https://www.cnblogs.com/liunlls/p/wpf-gif.html
https://blog.csdn.net/xinlingjun2007/article/details/80833378
https://www.cnblogs.com/liunlls/p/wpf-gif.html
https://blog.csdn.net/xinlingjun2007/article/details/80833378
