FROM the days of Thomas Edison, the New York area has been a big part of the film industry, and now modern technology is turning some of the strip malls and storage sheds of New Jersey and New York into silent-movie shrines. With help from the Web, fans of those films can hike along parking lots, weedy streambeds and gritty alleys where early screen actors posed as American Indians, Confederate soldiers, Soviet spies, Dickens characters and escaped convicts.