Linda Bean, granddaughter of Maine's L. L. Bean, is bringing us lobster. Though new to the foodie business, she's got her own warf, her own fishermen, and now her own concept: lobster rolls, each with a full ¼ of meat, fresh and perfect and dripping butter on your grateful lap, all over the country. The restaurants -- called "Linda Bean's Perfect Maine Lobster Roll" -- will consist of a takeout window and a kitchen, just like the clam shacks of New England. And Delray Beach will be the first so