A Texas playwright-actor-director who had never even been to Boston before last year to finally bring to the stage a tragedy that remains one of the most traumatic events in the city’s history. On Wednesday, “Inferno: Fire at the Cocoanut Grove 1942” will begin performances at the Plaza Theatre, Boston Center for the Arts. “Inferno” is written and directed by James Hansen Prince, a Texas playwright-actor-director, who had never even been to Boston before last year. It is also apparently the first theatrical production about the devastating nightclub blaze — “a massive, humongous story about the ’40s and our society...