The Greenbrier, White Sulphur Springs, W.Va., has officially opened it Casino Club with a grand opening, star-studded, guest list including Charles Barkley, Shaquille O’Neal, Jessica Simpson, Brooke Shields, Jennifer Garner and her husband Ben Affleck, and Raquel Welch.   The stars were invited to attend a five-star gourmet dinner, a concert by Lionel Richie,…