David Bowie’s cosmic journey, his lifelong search for self, truth, meaning and purpose, is splashed across the screen in the immersive technicolor fantasia of “Moonage Daydream,” a mesmerizing, swirling, kaleidoscopic explosion of music and color set to a soundtrack of the artist’s inimitable catalog. It’s an experience first and a documentary second. Writer, director and editor Brett Morgen, who previously explored the lives of film producer Robert Evans (2002’s “The Kid Stays in the Picture”) and Nirvana frontman Kurt Cobain (“Kurt Cobain: Montage of Heck”), presents Bowie through a barrage …