[Feature Request] Add Snap Assist to Overview

**Describe the feature you'd like**
A clear and concise description of what you want to happen (Ex. it would be nice to have [...]).
Is your feature request related to a problem? Please describe (Ex. I'm always frustrated when [...])

It would be really nice to have a way to tile windows directly from the overview. I will often go into the overview to move windows to other workspaces and organize everything, so it would really help my workflow to be able to tile them just by dragging them somewhere in the overview. Right now, if I want to move a window to another workspace, I have to go into the overview and move it and then go to the new workspace and tile it.

**Additional context**
Add any other context or screenshots about the feature request here.