ALLEN PARK, Mich. — Much has understandably been made of what the Lions’ success has meant to the city of Detroit. Head coach Dan Campbell vowed on his first day on the job to do his best to bring a winner built in a blue-collar image that mirrored the fan base it played for — and he has delivered on that, with the Lions on the cusp of the franchise’s first Super Bowl appearance. But in doing so, Campbell has also delivered for owner Sheila Hamp, who took a chance on the rough-around-the-edges coach who had been fighting for years to get a head job after a promising interim stint in Miami six …