Former New York City Mayor Rudy Giuliani is launching a new campaign in his contentious bankruptcy battle, spurred by a $148 million defamation ruling against him, in an unexpected place: the coffee aisle. Giuliani and his girlfriend Dr. Maria Ryan Tuesday night launched a new website shilling bagged Rudy Coffee with names like “Fighting for Justice,” “America’s Mayor” and “Enjoying Life,” which is decaffeinated. “I do know coffee has health benefits, but not in those little plastic things that are already ground — hurts my stomach,” Ryan tells viewers in a promotional video that dropped Tuesd…