Vanessa Piazza, whose credits include executive producing the Syfy series Lost Girl and Dark Matter, has inked deal with Entertainment One via her new production company Piazza Entertainment. The deal encompasses Piazza's TV projects, on which eOne will serve as the studio and control worldwide rights. The Canada-born Piazza developed and executive produced Lost Girl and served as executive producer of Season 1 and Season 2 of Dark Matter, the latter which lasted three…