Gordon Cox Theater EditorThe new film “One Night in Miami” began life as a successful play — but New Yorkers might not know that, because despite accolades in Los Angeles and London, the play never got a production in New York.Listen to this week’s “Stagecraft” podcast below:For Kemp Powers, the “One Night in Miami” playwright and writer of the screenplay adaptation (as well as the co-writer and co-director of Pixar’s recent film “Soul”), the experience highlighted what he sees as one of the