LiuChangFreeman

feat: add thumbnail cache in pwa

1

Now thumbnail of pictures and videos can be cached in pwa and updated in background.

fix search bug

1

这个接口可以search，但是仅限于家宽，云服务器的ip会404

https://criu.org/Pid_restore  I think the method is stupid, so I look up the code of CRIU. And there aren't any `fork()` there. 

控制条显示不全

5

只有暂停/播放，音量，全屏这三个按钮 

https://summer.iscas.ac.cn Open Source Promotion Plan encourages everyone to pay close attention to open source software and open source community, aiming to cultivate and explore more outstanding developers. `Summer 2021` will...