Will Thorne Staff WriterThe Lee Daniels and Karin Gist series “Our Kind of People” is picking up speed at Fox Entertainment.Fox is eyeing a potential series order for the drama, according to sources, and the company has now opened a writers’ room led by Gist.Inspired by Lawrence Otis Graham’s book “Our Kind of People: Inside America’s Black Upper Class,” the series takes place in the aspirational world of Oak Bluffs on Martha’s Vineyard, a historical stronghold where the rich and powerful black