feat: add a simple iOS app example

Examples/ios-app-example/Package.swift

@@ -0,0 +1,27 @@
+
+// swift-tools-version:5.9
+import PackageDescription
+
+let package = Package(
+    name: "ios-app-example",
+    platforms: [
+        .iOS(.v13),
+    ],
+    products: [
+        .executable(
+            name: "ios-app-example",
+            targets: ["ios-app-example"]
+        ),
+    ],
+    dependencies: [
+        .package(path: "../../"),
+    ],
+    targets: [
+        .executableTarget(
+            name: "ios-app-example",
+            dependencies: [
+                .product(name: "ConfigReader", package: "swift-configuration"),
+            ]
+        ),
+    ]
+)

Examples/ios-app-example/Sources/ios-app-example/main.swift

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+
+import SwiftUI
+import ConfigReader
+
+@main
+struct iOSApp: App {
+    var body: some Scene {
+        WindowGroup {
+            ContentView()
+        }
+    }
+}
+
+struct ContentView: View {
+    @State private var message = "Loading..."
+
+    var body: some View {
+        Text(message)
+            .onAppear(perform: loadConfig)
+    }
+
+    func loadConfig() {
+        do {
+            let config = try ConfigReader.shared.read(from: "config.json")
+            message = config.get("message", as: String.self) ?? "Default Message"
+        } catch {
+            message = "Error loading config: \(error)"
+        }
+    }
+}

Examples/ios-app-example/config.json

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+{
+    "message": "Hello from swift-configuration!"
+}