[Feature Request] Add selection size amount number

[Josh65-2201]

Feature Request

The Problem

Currently when selecting large amounts of chunks/block i have to manualy count them.

Feature Description

Add a number on the size representing x,y,z showing the size of block/chunks.

Alternatives

Additional context

[gentlegiantJGC]

In the select tool there is a label in the menu on the left showing the shape of the current selection. We could expand that information. I would like the ability to export the selection information to text for easy importing later. I think there is already a ticket open for that but we could add more information along with that.

[Josh65-2201]

it doesnt show for the chunk selection mode and it would be nice to show the size as its beeing dragged also

[gentlegiantJGC]

I have added a label showing the volume of the active box.