signInWithGoogle method
Implementation
Future<void> signInWithGoogle(BuildContext context) async {
if (kIsWeb) {
await _signInWithGoogleWeb(context);
} else if (Platform.isAndroid || Platform.isIOS) {
await _signInWithGoogleMobile(context);
} else if (Platform.isWindows || Platform.isMacOS || Platform.isLinux) {
await _signInWithGoogleDesktop(context);
}
}