Meghan Markle Leon Bennett/FilmMagic Meghan Markle’s friendship with college pal Lindsay Roth has been immortalized in Roth’s latest self-help book. Within the pages of “Romances & Practicalities: A Love Story (Maybe Yours!) in 250 Questions,” released by Roth on Tuesday, January 28, Markle, 43, is directly discussed. “Meghan Sussex, Meg, to be sisters by choice,…