All photos by Jim Rossman It’s a great day when I get to eat at a new place. Today, Jack Perkins, owner of local burger joint Maple and Motor, opened the doors to The Slow Bone Barbeque, his new barbecue restaurant at 2234 Irving Blvd. at the base of the new Sylvan Ave. bridge near the Design District in Dallas. Jack won the brisket competition at last year’s Meat Fight and announced his plans to open Slow Bone late last year. Well, today was the day. I was tenth in line when the doors opened this morning and the line…