hotkey for window arrangement / tiling?

[Kristian Rink]

Folks;

is there some way in recent (Ubuntu) GNOME to automatically "arrange"
all windows on a current workspace so that they don't overlap? I very
often do have the situation of, say, having two LibreOffice windows
open which I need to have side-by-side to work with the content or
compare things. For that situation, I'd like to have a hotkey to simply
do right this rather than just manually bringing the windows into right
place and size...

Ideas, anyone? Is this possible to set up? Any extensions for that?
TIA,
Kristian