Need an option to set a different aspect ration for the 2nd display

[Alan Com]

Most of the folding phones now have a 2nd (non-folding) display on the outside of the phone. When this is used by OpenCamera to take a photo, it assumes the same aspect ratio as is used for the internal display. This ends up causing a mess, because the outside display on the Motorola for example, takes photos in a 1:1 aspect ratio and displays that on the (square) screen.

So we need an option to set the aspect ratio for the outside display (called the Quick View Display on Motorola).