It’s been a minute since we heard from director Sam Mendes and his uber-ambitious “Beatles” film plans. Known for the Oscar-winning “American Beauty” and the Bond films, “Skyfall,” and “Spectre,” Mendes isn’t just taking the bold step of making a fictional film about the Beatles, he’s making four of them, one about each member: John Lennon, Paul McCartney, George Harrison and Ringo Starr.