add left right scrollbar to angular component code example

Example 1: angular scroll to element horizontally

scrollLeft(){
    this.widgetsContent.nativeElement.scrollLeft -= 150;
  }

  scrollRight(){
    this.widgetsContent.nativeElement.scrollLeft += 150;
  }

Example 2: angular scroll to element horizontally

@ViewChild('widgetsContent') widgetsContent: ElementRef;