AI update for watkins glen 67 and watkins glen short 1.0

This file contains updated ai_hints, side_r.csv, side_l.csv for Sergio Loro's Watkins Glen 67. If you find that track too narrow and overtaking too difficult for 67 cars, a good alternative is lilski's watkins glen short classic layout, this file also contains updated side_l.csv for that track to stop AI cars abusing the run-off area.