By Chris Gallagher and Steve Gorman WASHINGTON (Reuters) -Police issued a bulletin seeking a man they identified as a “person of interest” in a shooting that left four people wounded near an elite prep school in the nation’s capital on Friday as investigators searched door to door for the culprit. Eyewitnesses told Reuters and local media outlets they heard multiple bursts of gunfire in the upscale Van Ness neighborhood of northwest Washington next to the Edmund Burke School just as classes were about to be dismissed for the day. One man told television station WUSA-TV he heard rapid-fire shot…