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.

android/build.gradle

@@ -0,0 +1,41 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    ext {
+        buildToolsVersion = findProperty('android.buildToolsVersion') ?: '34.0.0'
+        minSdkVersion = Integer.parseInt(findProperty('android.minSdkVersion') ?: '23')
+        compileSdkVersion = Integer.parseInt(findProperty('android.compileSdkVersion') ?: '34')
+        targetSdkVersion = Integer.parseInt(findProperty('android.targetSdkVersion') ?: '34')
+        kotlinVersion = findProperty('android.kotlinVersion') ?: '1.9.23'
+
+        ndkVersion = "26.1.10909125"
+    }
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath('com.android.tools.build:gradle')
+        classpath('com.facebook.react:react-native-gradle-plugin')
+        classpath('org.jetbrains.kotlin:kotlin-gradle-plugin')
+    }
+}
+
+apply plugin: "com.facebook.react.rootproject"
+
+allprojects {
+    repositories {
+        maven {
+            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+            url(new File(['node', '--print', "require.resolve('react-native/package.json')"].execute(null, rootDir).text.trim(), '../android'))
+        }
+        maven {
+            // Android JSC is installed from npm
+            url(new File(['node', '--print', "require.resolve('jsc-android/package.json', { paths: [require.resolve('react-native/package.json')] })"].execute(null, rootDir).text.trim(), '../dist'))
+        }
+
+        google()
+        mavenCentral()
+        maven { url 'https://www.jitpack.io' }
+    }
+}