feature: ability to zoom in and out in the editor

[da-rulez]

Description

A button in the editor to zoom out, and in, when editing maps.

Intended Use-Case

You'd be able to use this button to make more tiles visible. Especially useful when working with bigger tilesizes where you only have like a quarter of the map visible at any time.

Duplicate Check

• This enhancement idea is not a duplicate to the best of my knowledge.