Feature request: Action queue

**Is your feature request related to a problem? Please describe.**
I'm always frustrated when I accidentally go to stage some files without realising I'm still pushing or committing. So I go away and get a drink while commit checks pass, knowing that it may well finish about 5 seconds after I leave my desk.

**Describe the solution you'd like**
It'd be amazing if consecutive actions would join a "queue", and lazygit would execute each one automatically after the previous has finished.

**Describe alternatives you've considered**
I thought about requesting another feature - the ability to set a chime sound effect once a command has finished, so I can hear it from the other room and know to return to my computer. But this would still be less efficient than being able to queue up multiple actions and have them performed automatically.