iOS Realm migration to add new altViewEnabled device setting

ios/App/App/AppDelegate.swift

@@ -1,5 +1,6 @@
 import UIKit
 import Capacitor
+import RealmSwift
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
@@ -8,6 +9,20 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.
+        
+        let configuration = Realm.Configuration(
+            schemaVersion: 1,
+            migrationBlock: { migration, oldSchemaVersion in
+                if (oldSchemaVersion < 1) {
+                    NSLog("Realm schema version was \(oldSchemaVersion)")
+                    migration.enumerateObjects(ofType: DeviceSettings.className()) { oldObject, newObject in
+                        newObject?["enableAltView"] = false
+                    }
+                }
+            }
+        )
+        Realm.Configuration.defaultConfiguration = configuration
+        
         return true
     }