Feature: Keybind for Returning to Previous Tab:

[SaintFenix]

As part of #376 I'll be creating issues for missing tmux features for discussion for inclusion in Zellij, or overall improvement if Zellij's equivalent doesn't have as much functionality as Tmux.

This one is fairly simple.

A keybind in which will select the most recent tab you were on before the current one.

Basically Zellij could keep a history of what tabs you were on, and return you to the previous one.

It could be in Normal Mode, or Tab Mode, though I'd imagine it most useful in Normal Mode.

[sagittarius-a]

Since it is labelled as a good first issue, I gave it a shot. I have a proof of concept working for this feature.

Before submitting a PR, I'd like to address few points regarding implementation:

• What default keybinding to use ? I've considered Tab in Tab mode. If we implement this in Normal mode, what should be the associated keybinding ?
• Do we use a toggle switch, i.e going backing and forth between the two last visited tabs, or we keep a list of visited tabs and we navigate through the list ? I've implemented the former since it felt more intuitive.

Thanks

[a-kenji]

Hey @sagittarius-a, that is awesome!

I think Tab in Tab mode is a good idea.
I am not sure if it makes much sense to bind it by default in the
Normal mode, but am open to more input on that.

I also think the former is more intuitive, and also what
most people would expect of such a feature.

Please do feel free to reach out if you have any more questions!

[sagittarius-a]

Alright PR is submitted.

I hope I did not forget something important. Any feedback appreciated :)