J Balvin and Ryan Castro have been awake since 5 a.m., but if they’re tired, there’s no way you would be able to tell. By mid-morning, the two Colombian stars are dressed in impeccably tailored suits on an unusually scorching April day in New York, dancing to reggaeton music blasting through a pair of speakers. As they gear up to talk about their joint album, Omerta , for the first time, they’ve made the occasion a full-blown, impromptu family gathering.  Their large crews have joined them, milling around the set, all while the guys dive into what this project means to them and how it’s brought them together as two forces in the industry. “I never had the chance to find a partner from Colombia to make an album together,” says Balvin. “We have a really beautiful relationship that became family.” It’s been nearly five years since the pair first connected, but their friendship seemed inevitable.…