Add catppuccin macchiato theme

[A1c0]

No description provided.

[sholderbach]

The test fail here seems to be the thing that was fixed in #936

If it isn't a hassle would you mind rebasing on the latest main?

Otherwise looks pretty much the same like the other catppuccin themes (minus the different colors) regarding the setup.

[sholderbach]

Thanks!

[fdncred]

The part that's missing here is the screenshot. https://github.com/nushell/nu_scripts/blob/main/themes/screenshots/README.md. I believe this is the script that creates the screenshot. https://github.com/nushell/nu_scripts/blob/main/themes/src/preview-generate-screenshots.nu

And, I believe this theme is in the wrong folder. This is a custom theme that probably belongs here https://github.com/nushell/nu_scripts/tree/main/themes/src/custom-nu-themes. It's "custom" because it's not part of the lemnos website where the other themes came from. https://github.com/lemnos/theme.sh