By Tom Blow The PGA Tour is edging closer to an agreement with Saudi Arabia’s Public Investment Fund (PIF) to end golf’s civil war. The sport has been fractured since the launch of the Saudi-backed LIV Golf circuit two years ago. Several superstars, including Brooks Koepka, Phil Mickelson and most recently Jon Rahm, have quit the PGA Tour to sign lucrative contracts with LIV Golf, while the likes of Rory McIlroy and Tiger Woods have refused to accept the PIF’s advances. Tyrrell Hatton is expected to be the latest big name to swap the PGA and DP World Tours for the LIV circuit, as it’s believed…