The Londoner from Lagos wowed the fringe with a show about language, family and cross-cultural identity. She talks about dread, dreams and her bid for 'controlled chaos' Before her first Edinburgh fringe run last summer, Ayoade Bamgboye put a question to her comedy friends: "How do you debut?" She recalls their advice: "You introduce yourself, and there's a point of view. There should also be a narrative arc. And you…