NEW YORK — The Lakers are used to putting on a show when they’re at Madison Square Garden.  But for most of Sunday night, they watched a show they probably wouldn’t want reruns of: the Knicks beating them up on the offensive glass and creating a barrage of open 3-pointers.  The result was the Knicks’ burying 18 3-pointers, and the Lakers losing in New York 112-100 despite Luka Doncic’s near triple-double of 30 points, 15 rebounds and eight assists.  LeBron James, who entered Sunday with the