CW-388 Add hausa language (#936)

* Add hausa language

* Add hausa language

* Add cupertino delegete

* Add flag to git

* - Fix hausa_intl.dart issue
- Fix menu items not updating properly
- Fix Nav bar issue

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Co-authored-by: OmarHatem <omarh.ismail1@gmail.com>

lib/entities/language_service.dart

@@ -26,7 +26,8 @@ class LanguageService {
     'bg': 'Български (Bulgarian)',
     'cs': 'čeština (Czech)',
     'ur': 'اردو (Urdu)',
-    'id': 'Bahasa Indonesia (Indonesian)'
+    'id': 'Bahasa Indonesia (Indonesian)',
+    'ha': 'Hausa Najeriya (Nigeria)'
   };
 
   static const Map<String, String> localeCountryCode = {
@@ -52,7 +53,8 @@ class LanguageService {
     'bg': 'bgr',
     'cs': 'czk',
     'ur': 'pak',
-    'id': 'idn'
+    'id': 'idn',
+    'ha': 'hau',
   };
 
   static final list = <String, String> {};