The courtroom chess play going on as Manhattan prosecutors try former President Donald Trump for allegedly criminally falsifying business records is one that not only keeps the defense guessing — but features a “secret weapon.” “She’s really key,” legal analyst Terri Austin told CNN’s Erin Burnett on “Out Front.” Austin was discussing none other than superstar witness Stephanie Clifford whose porn star stage name is the more familiar Stormy Daniels. Want more breaking political news? Click for the latest headlines at Raw Story. ALSO READ: Noem book describing dog killing is a donation perk at …