 Here comes that Popsicle Man. These days, that man or woman can be a celebrated chef. Trendy restaurants in New York City are offering an array of expensive delights, from shiso and kefir lime-flavored pops garnished with lemon balm and cilantro flowers to Indian Alfonso mango and purple yam treats. One upscale Korean eatery offers a sweet corn ice cream pop shaped like a corn cob sandwiched inside a charred corn cookie. Prices?