[FEATURE]: Integrate Kitty Multiplexer as strategy

[primeapple]

Is your feature request related to a problem? Please describe.
I would like to use your plugin, because it allows resizing, but am using the Kitty terminal.

Describe the solution you'd like
Support the Kitty Multiplexer as multiplexer option.

Describe alternatives you've considered
The plugin we already have for this is https://github.com/knubie/vim-kitty-navigator
But it does not support resizing :(

[mrjones2014]

Now that things are structured the way they are, adding a new multiplexer backend should be relatively easy, as long as the Kitty CLI has the things I need. I'll check into it and come back and update this issue 👍

[mrjones2014]

A quick look at window resizing in Kitty, it just uses "narrower"/"wider"/"taller"/"shorter", where tmux and wezterm both use up/down/left/right, so we wouldn't be able to the directional resizing in kitty, really.

https://sw.kovidgoyal.net/kitty/layouts/#window-resizing

We can still do directional pane navigation.

[primeapple]

I'm fine with being able to resize only within Neovim.

And maybe (just maybe) we can hack around kittys limitations in the future ;-)