Reset Graphics RAM display window size

[kendfrey]

Feature Request

Scenario

I simulate a circuit containing a Graphics RAM component, and I resize the display window.
Now I want to reset the window back to the "correct" size (native resolution).

Suggested solutions

1. Automatically set the window to match the image size when the simulation restarts.
2. Add controls to the UI to reset/adjust the zoom.

Bonus feature

Add the ability to set other zoom levels, like 200% or 1000%. Useful when simulating very small displays.