A toggleable option to hide Chapter thumbnails per user

[Kyouma 7]

Hello,

due to a recent bug (already fixed) on the apple tv app, chapters without thumbnails wouldn't show up. So I let emby generate thumbnails for chapters only.

But since I use chapters only to skip openings and endings, I find the thumbnails a bit of a nuisance, because it can potentially spoil some parts. I hate spoilers, even something so small like thumbnails. 

This is a bigger problem, when the media does not have chapters embedded, because emby will generate one every five minutes and since I have mostly hard subbed stuff it will look like this:

https://imgur.com/XIq1mn9

Since the bug has been fixed, I removed all thumbnails, but some users might prefer it with the them being available. So why not make it a toggleable option to hide/show thumbnails per user.

Maybe some people might like this too.