Hot off directing Project Power for Netflix, Henry Joost and Ariel Schulman have signed on to direct the sci-fi action thriller Nemesis for Warner Bros., Collider has exclusively learned. The premise is juicy, as the story is said to follow a genius engineer who witnesses the President of the United States commit a deadly crime and teams up with a vigilante to take down the President and his corrupt government. Like I said, it's juicy, though I'm not sure what the sci-fi element entails here. Emerald Fennell (Promising Young Woman) penned the most recent draft of …