A heroin addict incarcerated for a robbery escapes prison and reinvents himself as a doctor in the slums of Bombay; his ties to the crime underworld there lead him to Afghanistan, where he partners with a mob boss locked in a battle with Russian criminals. This series is only the latest in a recent torrent of programs about a white fellow restarting his life in a foreign land; elsewhere on Apple TV+, for instance, Justin Theroux leads his family on an adventure with Mexico as backdrop on “The Mosquito Coast.” But the show from which “Shantaram” could pick up a few tips is this years HBO Max original “Tokyo Vice.”