Add support for displaying images/stickers in the terminal using ueberzugpp

[GitWloda]

I think it could be interesting to add support for viewing photos, video tumbnails and stickers with ueberzug

[d99kris]

Thanks for suggesting. Adding support for viewing photos/etc in the terminal has been suggested before as well - see #99. Unfortunately it's currently not in plans to be added, but will update here if it changes.

[d99kris]

Let's track the feature request under #99 instead. I will proceed to close this one.