By Alek Arend A longtime PGA Tour golfer is resigning to join LIV Golf. Kevin Na took to Twitter with the stunning announcement. “For 19 years, I’ve played on the PGA Tour and I have loved every minute of it,” he said. “I appreciate the platform the Tour has provided me to play the game that I love and for the opportunities that have come with it. Recent developments in the professional golf world have given me a chance to reconsider my options. I would like the freedome to play wherever I want and exercising my right as a free agent gives me that opportunity. However to remain a PGA Tour play…