workspace::ActivatePaneInDirection support circular navigation

[mtn]

I have keymaps set up to trigger workspace::ActivatePaneInDirection to move in each direction. One behavior I miss from tmux (I think it's built in to select-pane) is circular navigation: if I'm in the right-most pane and try to navigate right, it wraps around to the left-most pane. I think it's not currently possible to do this in zed. Am I right, and if so, would a PR to make workspace::ActivatePaneInDirection behave this way be supported?

[SomeoneToIgnore]

I think that makes sense, but the caveat is that there are two sets of panes now: central (where the editor is) and right/bottom/left one (where the terminal is, depends on the position of the terminal dock).

The logic has to be able to wrap around either configuration, and has tests on that.