PRINCE Harry and Meghan Markle got a bird's-eye view of the New York skyline as they kicked off their trip to the city with a visit to the observatory at One World Trade Center. The royal couple is in town to attend Saturday's Global Citizen Live event at Central Park to encourage equal access to COVID-19 vaccines. It was their first joint outing since the birth of their daughter Lilibet 'Lili' Diana Mountbatten-Windsor in June. The Duke and Duchess of Sussex were accompanied by New York Governor Kathy Hochul, New York City Mayor Bill de Blasio, his wife, Chirlane McCray,…