Navigating Vim and Terminal panes with same keybindings

[3N4N]

Due to tmux's CLI callable, we can use the same keybinding to navigate between Vim and tmux panes:

1. Pane navigation key (Ctrl + h/j/k/l) parsed by tmux
2. Tmux checks if current pane is running Vim
3. If running Vim, tmux sends the key to Vim
4. Vim sees if there is any split to switch to in that direction
5. If there is another split, Vim switches and it's done here
6. If there is no more split, Vim calls tmux's callable and asks it to switch to the next tmux pane in that direction

It'd be nice to get similar behavior with MS Terminal. I did ask around about it before and tried to implement something rudimentary myself by hardcoding special case for Vim, but hit one end or other in the end. I'm honestly surprised no one is asking for this since I myself have been missing this for more than two years now since switching over from Linux.