Added gradle and cmake project

*** 22,32 ****
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  #import <Cocoa/Cocoa.h>
! 
  #import "CDragSource.h"
  #import "CDropTarget.h"
  
  @interface AWTView : NSView<NSTextInputClient, CDragSourceHolder, CDropTargetHolder> {
  @private
--- 22,33 ----
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  #import <Cocoa/Cocoa.h>
! #import <Metal/Metal.h>
! #import <MetalKit/MetalKit.h>
  #import "CDragSource.h"
  #import "CDropTarget.h"
  
  @interface AWTView : NSView<NSTextInputClient, CDragSourceHolder, CDropTargetHolder> {
  @private