People come to New York City for all sorts of reasons: to study; to travel; to become doctors and lawyers and writers; to make it on Broadway or as stand up comedians or to toil in the kitchens of up-and-coming restaurants. Chen Guangbiao is here this week to buy the New York Times. It’s not as surprising a proposal as it might sound if you know anything about Chen, the 45-year-old Chinese billionaire philanthropist with a knack for staging over-the-top, headline-grabbing stunts in the name of politics, poverty, disaster relief and the environment.