Warner Bros. Discovery chief David Zaslav is looking to set up a bidding war for his media conglomerate – even as David Ellison’s Paramount Skydance plans a multibillion-dollar takeover offer, The Post has learned.Paramount Skydance has yet to disclose an official bid for Warner Discovery, the owner of the Warner Brothers studios and the HBO Max streaming service, as well as cable networks like Discovery, TNT and CNN.But Zaslav isn’t in the waiting mood. According to a person with direct knowledge of the ma ...