Chef Jean Philippe Gaston will lead a new restaurant opening later this year in Midtown along with Chef Manabu Horiuchi and the Azuma Group. The yet unnamed concept will be an izakaya — a Japanese version of tapas, offering a relaxed atmosphere where people can meet up, grab a drink and share small plates — located at 318 Gray at Bagby, which is the space formerly occupied by Farrago. Gaston was the chef de cuisine of Cove Cold Bar until it closed, along with Haven, which it was housed inside,…