Last Thursday, CBS aired the final episode of “The Late Show with Stephen Colbert.” This Thursday, the first-ever creator-led late night show premiered on YouTube. It’s an almost too-on-the-nose example of what the future of this medium may look like. “Our tagline is the evolution of late night is here,” Ben Gleib, the host of “Good Night with Ben Glieb,” told TheWrap. That’s not just a slogan for the 47-year-old comedian. During its first episo…