Stanford football is cooking. Ushering in a new era with the hiring of head coach Tavita Pritchard , the Cardinal have been hard at work since, eager to return to being a perennial contender, while also proving they have what it takes to compete for both an ACC title and for a spot in the College Football Playoff. Since Pritchard has taken over, things have taken a turn for the better, with a lot more attention being paid to Stanford. And on Thursday, the Cardinal landed a big time prospect that poses the question — is Stanford football back? Signing four-star quarterback Sione Kaho out of Lincoln High School in Tacoma, Washington, the Cardinal have landed a guy who has a very high ceiling and the potential to be a big name in college football. A three-year starter in high school and highly touted since early on in his high school days, Kaho chose Stanford over nearly a dozen offers, receiving interest from Oregon, Arizona State, BYU, Cal and his hometown program, Washington.…