While you're at it , feel free to add a toggle shortcut/button for the bottom bar as well

As a reference we already had this discussion on the bottom bar.
https://forum.tracker-software.com/viewtopic.php?p=159934&hilit=hide+bottom+bar#p159934
In my opinion the bars that are left after removing both the side bar and bottom bar with your mouse is a bit in the way.... So with optional keyboard shortcuts, maybe you wouldn't need those small bars to click to open? Edit: yes indeed, if you toggle all toolbars off, you don't have that thin bar left , see that attached screenshot