In an unprecedented awards season move, indie studio IFC has unleashed an open letter to the Academy of Motion Picture Arts and Sciences — signed by none other than Indy, the breakout canine star of “ Good Boy .” The letter, humorous yet heartfelt, calls for the inclusion of animal actors in the Oscars’ acting categories, arguing it’s high time Hollywood gave its four-legged performers the recognition they deserve. “Despite my critically acclaimed role in the recent film ‘Good Boy,’ — I have