Sixel support

[Kreijstal]

Is your feature request related to a problem? Please describe.

When you tell it to do an image with python or something and it wants to show you, it doesn't. But in the web frontend it can, like in matplotlib plots or dalle3

Describe the solution you'd like

For terminals that support sixel you can show images directly on terminal

Describe alternatives you've considered

maybe open a window to show an image?

Additional context

you can hook up sixel with IPython to show you images
https://discourse.julialang.org/t/plots-in-the-terminal-with-sixel/22503