Allow Cycling Backward Between Git Log Configurations

[rafgugi]

Is your feature request related to a problem? Please describe.

When I press "a" to cycle through git log configurations, I can only go forward. I can't cycle back.

Describe the solution you'd like

Allow pressing "A" to cycle backward through git log configurations, just like pressing "a" cycles forward.

Describe alternatives you've considered

Currently, I keep pressing "a" until I get the desired log format. However, with up to 3 different log formats (including all local branches, all branches including remote, and the head branch with details), I sometimes get lost and have to cycle through multiple formats to get back to the one I need.

Additional context

Cycling both forward and backward would make exploring different log views more intuitive.

[stefanhaller]

This would be easy to do, but I'm a little bit reluctant to waste a keybinding on this. I admit that there aren't many used yet in the status panel, and shift-A is available, but still. I'm currently working on support for multiple pagers that you can cycle through, and we will have the same problem there; and that's a global command, so we have to be a lot more careful with not using up keybindings.

I wonder if it would be enough to visually indicate which log format you are on. Currently we show just ╭─[0]─Log─ in the title bar, what if we make that ╭─[0]─Log (2 of 3)─, would that help with not getting lost?

[rafgugi]

Yesss, that’s the one! Definitely would make it super clear which log format I’m on. Mind if I take a shot at implementing it?

[stefanhaller]

Oh, I was basically done already, sorry. I took the opportunity to clean up a few things along the way. Please test and/or review: #4943