COOPERSTOWN, N.Y. — Billy Williams, the greatest left-handed hitter in Cubs history and the man who held the National League record for consecutive games played for 14 years, turned 88 on Monday. “When you think about that franchise, and how long it has been around, and he’s basically the best left-handed hitter in the history of that franchise, that’s a pretty amazing thing to consider,” said Josh Rawitch, president of the National Baseball Hal…