Allow zoom in to show raw pixels without interpolation

This is something that some people like and some people don’t - but I think it is an important option to provide.

The pan/zoom tool is convenient and works well - but I like to see the actual pixels when I zoom in - and instead they are blurred and interpolated. When I study star shapes and guiding - I like to see the raw pixels as individual blocks when I zoom in - and I am not alone. Please allow a toggle to interpolate or not.