Margaret Qualley, Anthony Mackie and Danny Huston are set to star in IO, a sci-fi pic IO for director Jonathan Halpery. Shooting starts this week in France on the film, which follows one girl's coming of age while examining the dangers of humanity's current relationship with the planet. Netflix will stream the movie starting next year. Qualley will play Sam Walden, a teenager surviving as one of the last people on an abandoned post-cataclysmic Earth, who is racing to find…