Get Vulkan rendering on iOS (still, need to hook up input etc)

ios/ViewControllerMetal.h

@@ -1,3 +1,18 @@
 // ViewControllerMetal
 // Used by both Vulkan/MoltenVK and the future Metal backend.
 
+#pragma once
+#include "ViewControllerCommon.h"
+
+#import "iCade/iCadeReaderView.h"
+#import "CameraHelper.h"
+#import "LocationHelper.h"
+
+@interface PPSSPPViewControllerMetal : UIViewController<
+    iCadeEventDelegate, LocationHandlerDelegate, CameraFrameDelegate,
+    UIGestureRecognizerDelegate, UIKeyInput, PPSSPPViewController>
+@end
+
+/** The Metal-compatibile view. */
+@interface PPSSPPMetalView : UIView
+@end