Dean Fleischer Camp, the filmmaker behind A24’s charming indie comedy “Marcel the Shell With Shoes On,” is directing “Lilo & Stitch.” Sanders, who co-directed the original 2002 film, is reprising his voice role of Stitch, while Maia Kealoha (as Lilo), Zach Galifianakis, Sydney Agudong, Billy Magnussen and Courtney B. Vance are joining the cast.