Lena Seikaly, photo by Nestor Diaz.Though it is a club with a national reputation, Blues Alley regularly features local acts, particularly early in the week. For area musicians, the opportunity to perform in the historic club is a big deal, giving these players the chance to appear on the same stage as many a jazz great. Tomorrow night, the venue features vocalist Lena Seikaly, a rising star of the District’s jazz scene. A familiar name…