Linda and Frank Gigliotti’s first date was a Red Sox game at Fenway Park. “I should have known then,” Linda said. “Forty-five years later, our life is consumed with baseball.” This weekend, that first date will come full circle when the longtime Plymouth couple travels to Cooperstown, New York, where Linda will be inducted into the Sports Travel and Tours Baseball Stadium Hall of Fame. Her name and photograph will be added to a book honoring fan…