Wrap directional pane focus at the edge

[ashokDevs]

Right now ctrl+h/j/k/l (focus_pane_left/right/up/down) does nothing when there's no pane further in that direction. tmux wraps in this case, e.g. select-pane -R from the rightmost pane jumps back to the leftmost one, so with 2 panes a single key toggles between them.

Would like herdr's directional pane focus to wrap the same way instead of stopping at the edge. Closed issue: #2369.

[craftzdog]

Agree. I'm from tmux, too, and I love its wrapping focus pane movement.
Any chance of getting this PR merged?
#5453