No AI Traffic Collision

Adds an in-game on/off toggle to disable object collisions for moving AI traffic vehicles. This lets you drive through traffic without obstruction. The traffic vehicles themselves will still detect you and stop in front of you or try to overtake you. Helpers driving via the helper system or with AutoDrive also no longer get stuck in AI traffic.

However, AI traffic vehicles do not detect each other. Therefore, in rare cases, vehicles may try to drive through other vehicles.