WarnerMedia's forthcoming streaming service will bring together its "treasure trove" of 42,000 hours of content from HBO as well as brands such as DC, Looney Tunes, Turner, The CW and CNN after Kevin Reilly for the first time lifted the lid on the content that will fuel the platform. Reilly discussed Monday at the TCA winter press tour how the service, announced in October, will bring together brands like Bugs Bunny, Scooby Doo, The Lego Movie, The Flash, RBG and The Alien…