Sandown Raceway 1.1

v1.1 changelog;
-Smoothed corner edges. (Suggestion by Papifix. Thanks.)
-Updated Shader.
-Billboards upscaled with AI.
-Changed crowd textures by Kniker97. (Thanks)

v1.01 changelog;
Fixed a crash caused by camera_facing.ini.
Fixed groove/skidmark height.
Added ext_config and cam by CrisT86.