Apple is planning to begin selling AirPods in its retail stores this coming Monday, Dec. 19, according to a new report by MacRumors. While Apple previously announced that AirPods would be in stores sometime next week, more specific information has surfaced that product is already in transit to retail locations and is expected to go on sale Monday morning. Shipments are also en route to Apple Authorized Resellers and carrier stores, so AirPods should…