On Tuesday, iHeartMedia revealed many of the artists set to take the stage for this year’s iHeartRadio Music Festival at the T-Mobile Arena in Las Vegas on Sept. 22 and 23 — and the lineup is star-studded. Performers for the upcoming festival include Kelly Clarkson, Kane Brown, Lenny Kravitz, Lil Wayne, Foo Fighters, Fall Out Boy, Miguel, Public Enemy, Sheryl …