For five years, Abel Caballero, mayor of the Spanish city of Vigo, has had an obsession. “I want to tell the mayor of New York to get ready because he’s going to see the lights of Vigo from there,” he declared. From his small office in the Atlantic coast city, the 77-year-old Caballero plans the lighting every year, and when Christmas comes, he challenges the mayor of the Big Apple. The first message was addressed to Bill de Blasio, and this year it was the turn of the current mayor, Eric Adams. “New Yorkers will be jealous because Vigo’s lights are simply the best,” he said. That’s not just t…