Sonder Atala Champs-Élysées, Paris – Image Credit Sonder    Today, Marriott International, Inc. (NASDAQ: MAR) announced a long-term licensing agreement with Sonder Holdings Inc. (NASDAQ: SOND), which is expected to add over 9,000 rooms to Marriott’s portfolio by year-end and approximately 1,500 rooms to its pipeline. Under this agreement, Sonder’s open and pipeline portfolio, which primarily…