The ice has thawed. The sun is shining. It’s spring, and that means festivals and events—a lot of them—all across New York. And things are only going to get hotter this summer. All season long you can groove to music under the stars, watch glass get made al fresco, sample delicious food, and get your kicks on midway rides. Here are your family's must-catch things to do across the Empire State this summer. Mark your calendar!…