MetalKit iOS xcode15.0 b1

#MetalKit.framework https://github.com/xamarin/xamarin-macios/pull/19274

diff -ruN /Applications/Xcode_14.3.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKTextureLoader.h /Applications/Xcode_15.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKTextureLoader.h
--- /Applications/Xcode_14.3.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKTextureLoader.h	2023-03-09 23:52:12
+++ /Applications/Xcode_15.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKTextureLoader.h	2023-05-19 21:14:38
@@ -126,6 +126,13 @@
  */
 MTK_EXTERN MTKTextureLoaderOrigin __nonnull const MTKTextureLoaderOriginFlippedVertically NS_AVAILABLE(10_12, 10_0);
 
+/*!
+ @constant MTKTextureLoaderOptionLoadAsArray
+ @abstract Identifier specifying that the texture should be loaded as an array texture when possible.
+ @discussion Type is an NSNumber with a boolean value.
+ */
+MTK_EXTERN MTKTextureLoaderOption __nonnull const MTKTextureLoaderOptionLoadAsArray NS_AVAILABLE(14_0, 17_0);
+
 typedef void (^MTKTextureLoaderCallback) (id <MTLTexture> __nullable texture, NSError * __nullable error) NS_SWIFT_NAME(MTKTextureLoader.Callback);
 
 typedef void (^MTKTextureLoaderArrayCallback) (NSArray<id <MTLTexture>> * __nonnull textures, NSError * __nullable error) NS_SWIFT_NAME(MTKTextureLoader.ArrayCallback) NS_AVAILABLE(10_12, 10_0);
diff -ruN /Applications/Xcode_14.3.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKView.h /Applications/Xcode_15.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKView.h
--- /Applications/Xcode_14.3.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKView.h	2023-03-09 23:52:12
+++ /Applications/Xcode_15.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/MetalKit.framework/Headers/MTKView.h	2023-05-19 22:21:29
@@ -20,7 +20,9 @@
  @abstract View for rendering metal content
  */
 API_AVAILABLE(macos(10.11), ios(9.0))
-
+#if defined(TARGET_OS_XR) && TARGET_OS_XR
+API_UNAVAILABLE(xros)
+#endif
 @interface MTKView : UIView <NSCoding,CALayerDelegate>
 
 /*!
@@ -232,7 +234,9 @@
  @abstract Allows an object to render into the view and respond to resize events
  */
 API_AVAILABLE(macos(10.11), ios(9.0))
-
+#if defined(TARGET_OS_XR) && TARGET_OS_XR
+API_UNAVAILABLE(xros)
+#endif
 @protocol MTKViewDelegate <NSObject>
 
 /*!