Automate iOS build and device installation

Sources/App.swift

@@ -0,0 +1,31 @@
+import UIKit
+
+@main
+final class AppDelegate: UIResponder, UIApplicationDelegate {
+    var window: UIWindow?
+
+    func application(
+        _ application: UIApplication,
+        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil
+    ) -> Bool {
+        let label = UILabel()
+        label.text = "Hello, world!"
+        label.font = .systemFont(ofSize: 32, weight: .bold)
+        label.textAlignment = .center
+
+        let viewController = UIViewController()
+        viewController.view.backgroundColor = .systemBackground
+        viewController.view.addSubview(label)
+        label.translatesAutoresizingMaskIntoConstraints = false
+        NSLayoutConstraint.activate([
+            label.centerXAnchor.constraint(equalTo: viewController.view.centerXAnchor),
+            label.centerYAnchor.constraint(equalTo: viewController.view.centerYAnchor),
+        ])
+
+        let window = UIWindow(frame: UIScreen.main.bounds)
+        window.rootViewController = viewController
+        window.makeKeyAndVisible()
+        self.window = window
+        return true
+    }
+}