Will Thorne Staff WriterUMC, AMC Networks’ streaming service dedicated to Black film and TV, has found its latest project.The service has given the greenlight to “Millennials,” a multi-cam comedy from “In the Heat of the Night” Rugg Williams and his son Oren Williams.“Millennials” will explore the lives of four 20-something roommates – a business student, a YouTuber, a college dropout, and a personal trainer – as they navigate the chaos of being young, finding success, and finding themselves in