Star LSU guard Flau’jae Johnson knows exactly what she’d get head coach Kim Mulkey for Christmas. “Blue crabs,” she told Just Women’s Sports in November, days before DICK’S Sporting Goods declared her Greatest Wrapper in the Game, a promotion touting the college senior’s own wrapping paper line and online video series. “Me and her, we like to eat blue crab.” Ranked No. 5 in the AP Top 25 Women’s College Basketball Poll, LSU is never far from the Final Four conversation. But Johnson — who’s increasingly brought a personal touch to her leadership role on the Tigers — has…