A dog-loving Brooklyn couple was reunited with their beloved French bulldog, Coco Chanel, on Monday night — hours after a crew of brazen dognappers snatched the pooch in a home invasion heist. Coco was saved after the armed bandits ditched her in a garage at Wyckoff Heights Medical Centers, where staffers took her in and recognized her from an article in The Post. The couple trekked to nurse Amy O’Sullivan’s home on Staten Island for a heartwarming reunion with the 2-year-old pet late Monday. “