The opening at a New York Luckin Photo: Richard B. Levine/Zuma PressLuckin Coffee could have opened its first stores anywhere in America. China’s biggest coffee chain chose a New York City spot less than 200 feet from a Starbucks.From there, Luckin is serving up coffee drinks from a flat white to a raspberry cold brew, really fast, ordered on its mobile app whose coupons may be as addictive as caffeine.  ...