Young French interior designers and craftspeople are being spotlighted at the Villa Albertine’s historic Payne Whitney Mansion, in an exhibit functioning as the centerpiece of the fourth annual “Oui Design ! Festival.” On display is a diversity of decorative and functional pieces, styles and materials — from the textile weaving by Lily Alcarez and Léa Berlier, and the lacquer technique of Nicolas Pinon, to the ceramic designs by Céline Salomon and the chair design from Atelier Monier. The pieces range from fresh to compelling to curious in character. But all couldn’t have been displayed in a better manner, on the second floor of the stunning 1909 Renaissance-style landmark mansion on Fifth Avenue designed by Stanford White, and set upon scenography consisting of a large, circular minimalist counter and pedestals created by Harry Nuriev of Crosby Studios. Oui Design!…