[feature request] show CLI command for action

[rkurchin]

Thank you so much for this project! It's been so useful in helping me build my mental model for git, etc. and I use it basically all the time when working in repos on my local machine. However, I often work on remote systems where I need to do everything from the terminal, and so knowing the correct commands for various actions is useful. I would love the feature of optionally being able to see what exact command ungit has sent to accomplish a given action when I do it through the GUI, which I imagine would be quite easy to implement and very useful in learning...