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/Images.xcassets/SplashScreen.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images": [
+    {
+      "idiom": "universal",
+      "filename": "image.png",
+      "scale": "1x"
+    },
+    {
+      "idiom": "universal",
+      "scale": "2x"
+    },
+    {
+      "idiom": "universal",
+      "scale": "3x"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "expo"
+  }
+}