Appetizers are the new entrees." —New York MagazineStarters, amuses-bouche, antipasti, hors d'oeuvres, mezes, antojitos, dim sum, tapas, canapes, finger foods-—no matter what you call them, people everywhere are choosing small plates over traditional entree-based meals. Internationally acclaimed chef and culinary instructor Pamela Sheldon Johns presents 50 festive appetizers and practical party-planning advice on presentation, preparation,…