support for Zellij

[tcoopman]

I think this should be not hard with the current theming possibilities of zellij

Here are some PRs that implement a theme: zellij-org/zellij#3579 zellij-org/zellij#3596

[hamvocke]

Just a heads-up: I saw this request, and I think it's fairly simple to put together. I'm on the road at the moment and won't get to it for a few days, but I'll look into it once things are a little more quiet.

[hamvocke]

Closed by 9297c9b