add localization for no_country text

lib/selection_dialog.dart

@@ -1,4 +1,5 @@
 import 'package:country_code_picker/country_code.dart';
+import 'package:country_code_picker/country_localizations.dart';
 import 'package:flutter/material.dart';
 
 /// selection dialog used for selection of the country code
@@ -176,7 +177,8 @@ class _SelectionDialogState extends State<SelectionDialog> {
     }
 
     return Center(
-      child: Text('No country found'),
+      child: Text(CountryLocalizations.of(context)?.translate('no_country') ??
+          'No country found'),
     );
   }