PHOTO: Tom Izzo has cut down many championship nets, but it's not a number as great as the total of Big Ten coaches he has outlasted. By TOM SHANAHAN Many measuring sticks gauge Tom Izzo's success. Here's one beyond citing one national title, eight Final Fours, 10 Big Ten regular-season titles, six Big Ten tournament crowns and 624 victories: 53 and counting. That’s how many Big Ten basketball coaches have come and gone since Izzo took over Michigan…