CAMBRIDGE — The scent of smoked meats fused with the sound of public karaoke on Saturday night as hundreds of people packed Brattle Street, in celebration of the Harvard Square’s first Asian Night Market. The street festival featured over a dozen different vendors, selling everything from pork skewers to jewelry. It was organized by the Harvard Square Business Association, along with the local Philippine American Alliance — though cuisine and curios from all across East Asia were on display.