How many 20-year-olds do you know who have earned not one, but two medals at the Winter Olympic Games? On Saturday, you’ll have a chance to meet this skier and learn what it takes to win gold and bronze on the worldwide stage. Liz Lemley trained at Ski and Snowboard Club Vail and is the first American mogul gold medalist since Hannah Kearney in the 2010 Winter Games in Canada. After a torn ACL during a training run for the opening race in Ruka, …