Sixel graphics support

[rcarmo]

I know this is a long shot, but there are certainly folk out there who would find it extremely fun to implement this.

[evanfarrar]

I think sixel would be interesting, but I wonder what other graphical terminal formats exist? I had only heard about kitty up til now, but know that I've seen graphics in the terminal intermittently over the years.

[rcarmo]

Sixel is the oldest approach I know of, and the most widely implemented (also likely the easiest to incorporate and test).

[carloscabanero]

If we were to implement this, I think it should be done upstream, then we can all take advantage. Linking here:
https://groups.google.com/a/chromium.org/g/chromium-hterm/c/0ojIBQwFOJc