Drag Dividers to resize sections

### Is your feature request related to a problem? Please describe.
I frequently find, that I would like to temporarily make the left pane smaller to see more from the right pane even with larger font sizes.

### Describe the solution you'd like
Ideally, I would like to just grab the divider line and move the divider.

### Describe alternatives you've considered
Switching to a different layout: works, but not quite as efficient than just moving the divider, especially since that allows me to keep the context of the left pane, while getting more space for the right one (or vice versa).