basic auth working with google sign in button

nirvana-ios/nirvana_iosApp.swift

@@ -7,17 +7,27 @@
 
 import SwiftUI
 import Firebase
+import GoogleSignIn
 
 @main
 struct nirvana_iosApp: App {
-    
-    init() {
-        FirebaseApp.configure()
-    }
-    
+    @UIApplicationDelegateAdaptor(AppDelegate.self) var delegate
     var body: some Scene {
         WindowGroup {
             ContentView()
         }
     }
 }
+
+class AppDelegate: NSObject, UIApplicationDelegate{
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions:
+                     [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
+        FirebaseApp.configure()
+        
+        return true
+    }
+    
+    func application(_ application: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey: Any]) -> Bool {
+        return GIDSignIn.sharedInstance.handle(url)
+    }
+}