Few upcoming shows have higher expectations attached to them than “The Lord of the Rings: The Rings of Power.” Amazon’s upcoming fantasy epic isn’t just the most expensive television show ever produced, it’s also based on one of the most popular book series of all time. On top of that, Peter Jackson’s first trilogy of “Lord of the Rings” movies set the standard for fantasy filmmaking, so “The Rings of Power” will inevitably be compared to that as well. That’s a lot of pressure for showrunners Patrick McKay and J.D.