Display size (in characters) while dragging windows edges

[spotlesscoder]

Prerequisites

• [X] I have searched open and closed issues for duplicates.

Feature

While increasing the window size, I'd like to have an overlay in the middle of the terminal window which displays the current window size.

Existing work The Ubuntu Desktop default terminal already does that.

[cassidyjames]

@CodingSpiderFox what's the value of exposing the exact window size to a user?

[spotlesscoder]

It allows adjusting the line wrapping to a certain screen character width amount before copying outputs