Dubai's IMG plans another record indoor theme park

* IMG Worlds of Legends to be world's largest indoor theme park * To feature characters from gaming, children's TV * Parent company considering stock market listing - sources By Tom Arnold and Hadeel Al Sayegh DUBAI, Dec 6 (Reuters) - Dubai's IMG Worlds plans to build the world's largest indoor theme park, based on children's TV and gaming characters, only months after another of its new resorts claimed the record for size. Located in Dubai, IMG Worlds of Legends will feature eight property part