Joe Otterson TV ReporterTian Richards has been cast in the title role of the “Nancy Drew” spinoff “Tom Swift” at The CW, Variety has learned.Richards will make his first appearance as the character in an upcoming episode of “Nancy Drew.” Then, should the “Tom Swift” standalone series get greenlit at the network, he would star.The plans is for Swift to crash into one of Drew’s investigations, an event which she interprets as supernatural and he believes to be cosmically paranormal.The standalone