Add resizable sprite/texture viewer with zoom controls

[CreativeNick]

Description

This PR adds a resizable sprite/texture viewer with added zoom controls in the Sprite Editor. Users can now:

• Zoom in/out via buttons, Ctrl + Mouse Wheel, or drag to zoom by clicking and dragging on the sprite texture
• Fit to view to automatically scale sprites to fit the available space
• Reset to actual size (1:1 pixel ratio)

Caveats

• Maximum zoom is currently capped at 10x

Example Screenshot