PARIS — “Euphoria’s got nothing on this script,” John Galliano enthused about the story he’d written for Maison Margiela’s latest Artisanal presentation. Young lovers on the lam, fleeing through the American badlands, hotly pursued by vigilantes? It could have been … well, Badlands. Or Natural Born Killers. Or Bonnie and Clyde. Galliano said his inspiration was “all the films that have had an influence on me and made me the…