TF-1581 Support language Italian

lib/main/localizations/app_localizations.dart

@@ -1609,6 +1609,12 @@ class AppLocalizations {
         name: 'languageArabic');
   }
 
+  String get languageItalian {
+    return Intl.message(
+      'Italian',
+      name: 'languageItalian');
+  }
+
   String get messageDialogSendEmailUploadingAttachment {
     return Intl.message(
         'Your message could not be sent because it uploading attachment',

lib/main/localizations/localization_service.dart

@@ -15,7 +15,8 @@ class LocalizationService extends Translations {
     'en',
     'vi',
     'ru',
-    'ar'
+    'ar',
+    'it'
   ];
 
   static const List<Locale> supportedLocales = [
@@ -23,7 +24,8 @@ class LocalizationService extends Translations {
     Locale('en', 'US'),
     Locale('vi', 'VN'),
     Locale('ru', 'RU'),
-    Locale('ar', 'TN')
+    Locale('ar', 'TN'),
+    Locale('it', 'IT')
   ];
 
   static final locale = _getLocaleFromLanguage();