Add initial iOS project structure for Vegas Blackjack

- Created SplashScreenBackground image asset with multiple scales.
- Added image file for SplashScreenBackground.
- Initialized Info.plist with essential app configuration.
- Created SplashScreen storyboard for launch screen design.
- Added Expo.plist for update configurations.
- Created bridging header for Swift compatibility.
- Added entitlements for in-app payments.
- Implemented main entry point for the application.
- Added a placeholder Swift file for native module compatibility.

ios/VegasBlackjack/AppDelegate.h

@@ -0,0 +1,7 @@
+#import <RCTAppDelegate.h>
+#import <UIKit/UIKit.h>
+#import <Expo/Expo.h>
+
+@interface AppDelegate : EXAppDelegateWrapper
+
+@end