feat(cable): add zellij-sessions channel

[Vexo413]

📺 PR Description

Add a zellij-sessions channel for searching through the Zellij multiplexer's sessions, similar to the tmux-sessions channel.

Checklist

• my commits and PR title follow the conventional commits format
• if this is a new feature, I have added tests to consolidate the feature and prevent regressions
• if this is a bug fix, I have added a test that reproduces the bug (if applicable)
• I have added a reasonable amount of documentation to the code where appropriate

[alexpasmantier]

it looks like this is trying to strip ansi escape codes from zellij's output.

Reading zellij's code (couldn't find anything in the docs for some reason), it seems they have a --no-formatting option you could use to avoid having to do that.

and as a last resort if the above doesn't work you can also use display = "{strip_ansi}"

[alexpasmantier]

Thanks for the PR, looks mostly good to me except for that unnecessary sed expression I mentioned above.