added support for Portuguese

packages/stream_chat_localizations/example/lib/main.dart

@@ -75,6 +75,7 @@ class MyApp extends StatelessWidget {
           Locale('es'),
           Locale('ja'),
           Locale('ko'),
+          Locale('pt'),
         ],
         // Add GlobalStreamChatLocalizations.delegates
         localizationsDelegates: GlobalStreamChatLocalizations.delegates,

packages/stream_chat_localizations/example/lib/override_lang.dart

@@ -100,6 +100,7 @@ class MyApp extends StatelessWidget {
           Locale('es'),
           Locale('ja'),
           Locale('ko'),
+          Locale('pt'),
         ],
         // Add overridden "CustomStreamChatLocalizationsEn.delegate" along with
         // "GlobalStreamChatLocalizations.delegates"