A toggle to maintain set resolution even in fullscreen/borderless mode

[jack27121]

Someone would like it so even in fullscreen/borderless the game maintains whatever resolution is set. So effectively it would be the same size as if the game was in windowed mode, but now it just has a black background.

should be a boolean on the stanncam manager. And get set functions

[jack27121]

actually instead of having a tiny game in a big black background, if there's a way for the display resolution to be low but still be stretched to fullscreen that would be ideal. So not draw_stretched, but like a windows setting