NEW YORK — The latest luxury tower to rise in New York could distinguish itself not for its sky-high views but for its residents: survivors of 9/11, and some of the lowest-income renters in the city. On Thursday, a state oversight board cleared the way for a 900-foot mixed-use tower to be built at 130 Liberty St., also known as 5 World Trade, the only site on the World Trade Center campus that is expected to be residential. It took two decades of political wrangling. But the real feat, spurred b