No matter what Stephen Cluxton does during his Dublin return in 2023, one image will always define him. The free he took in 2011 to win Dublin the All-Ireland for the first time in 16 years is the enduring image of Cluxton.  Whenever it’s shown, I’m reminded of something else. It isn’t Croke Park on an All-Ireland September, but a training camp in January 2010 when the plan was first laid out by Pat Gilroy, who gave Cluxton kicking duties.  Everybody knew Cluxton was a good striker of a ball but it was during a training camp in Carton House…