The Irish director and screenwriter Terry George, known for powerful films like “Hotel Rwanda” and “In the Name of the Father,” co-written with and directed by Jim Sheridan, has been a recurring presence at the Hamptons International Film Festival since his directorial debut, “Some Mother’s Son,” opened the festival in 1996. This year, Mr. George, who has a house in Noyac, is back with his first short film, “The Shore.”