Refactor iOS deployment to use XCode project

Source/Engine/Platform/iOS/iOSApp.h

@@ -0,0 +1,34 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#ifndef PLATFORM_IOS
+// When included from generated XCode main.m file
+#define PLATFORM_IOS 1
+#define FLAXENGINE_API
+#endif
+
+#if PLATFORM_IOS
+
+#import <UIKit/UIKit.h>
+
+FLAXENGINE_API
+@interface FlaxView : UIView
+
+@end
+
+FLAXENGINE_API
+@interface FlaxViewController : UIViewController
+
+@end
+
+FLAXENGINE_API
+@interface FlaxAppDelegate : UIResponder <UIApplicationDelegate>
+
+@property(strong, retain, nonatomic) UIWindow* window;
+@property(strong, retain, nonatomic) FlaxViewController* viewController;
+@property(strong, retain, nonatomic) FlaxView* view;
+
+@end
+
+#endif