Video grabber QoL enhancement.

[rey]

Not sure since which exact version video grabber became internal and not based on some external site anymore, but this grabber is very useful.! The only 2 things lacking for it are QoL:
- animation-progress in taskbar (while download progresses)
- sound at the end of download (just like with ordinary downloads, can be tied to the same enabling sound option)
Can these please be added?