Of all the player introductions we’ve seen over the years at Kentucky, I’m not sure any have included a Wildcat rapping his own song down the steps and out to the floor at Rupp Arena where he’s surrounded by dancing teammates in front of 22K strong. But Lamont Butlers don’t come around too often. Kentucky’s starting point guard previewed his new song ahead of Big Blue Madness before performing it in front of the sold-out crowd. “Amari (Williams) and BG (Brandon Garrison) on the rim, and I bet they hang. I don’t even have to shoot my shot, I just catch and bang. Outlet, we running up and down t…