Amy Sherman-Palladino and Daniel Palladino are setting their sights on the world of competitive ballet. The Hollywood Reporter writes the "Marvelous Mrs. Maisel" creators are set to a two-season, straight-to-series order for Prime Video with "Étoile". They'll also be reuniting with cast members from their popular show with Luke Kirby and Gideon Glick. Camille Cottin…