Split graphical settings into separate options — Airport X-Ray Simulator Steam update #1115539

- Split the games graphical settings into individual settings. Standard presets will still exist, eg very low > high, but you can now tweak the following settings manually: Anti-Aliasing, Render Scale, Shadow Quality, Shadow Distance, Ambient Occlusion, Reflection Probe, Dynamic Conveyor flaps. This update has been prioritized to diagnose and hopefully fix a lagg issue some players are experiencing when standing near the confiscation bin/flag rack.