Add Image support using imgcat

[AM-I-Human]

I know that is on roadmap and I think I can help by suggesting this.
I found this Python package that enable you to see images on the terminal.
It supports Wezterm, so with it you have full resolution images.
https://pypi.org/project/imgcat/

Considering that is python it's possible to take inspiration from it to make it.
This can enable a full markdown previewer for the terminal, I think the neovim community will love this.

[github-actions]

We found the following entry in the FAQ which you may find helpful:

• Does Textual support images?

Feel free to close this issue if you found an answer in the FAQ. Otherwise, please give us a little time to review.

This is an automated reply, generated by FAQtory

[SkwalExe]

This uses Kitty's Terminal graphics protocol, which isn't supported by most terminal emulators...

[AM-I-Human]

I understand we must consider that only terminal emulators with rendering capabilities can render images well. (I found this discussion for windows terminal; I didn't grasp it fully but place here for reference microsoft/terminal#5746)
I found this repo that seems better https://github.com/AnonymouX47/term-image
That support other images terminal using block mode: https://github.com/AnonymouX47/termvisage

[AM-I-Human]

I found this #384, on rich. I think it is better if I close this then.

[github-actions]

Don't forget to star the repository!

Follow @textualizeio for Textual updates.

[nithin-mk]

This uses Kitty's Terminal graphics protocol, which isn't supported by most terminal emulators...

No, imgcat uses the iTerm2 Inline Images Protocol, which is supported by many terminals, including VS Code now.