feat: add create headline localization keys

- Added createHeadline key
- Added success message key
- Added loading data key

Author: fulleni

lib/l10n/app_localizations.dart

@@ -1243,6 +1243,24 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Cannot update: Original headline data not loaded.'**
   String get cannotUpdateHeadlineError;
+
+  /// Title for the Create Headline page
+  ///
+  /// In en, this message translates to:
+  /// **'Create Headline'**
+  String get createHeadline;
+
+  /// Message displayed when a headline is created successfully
+  ///
+  /// In en, this message translates to:
+  /// **'Headline created successfully.'**
+  String get headlineCreatedSuccessfully;
+
+  /// Generic message displayed while loading data for a form
+  ///
+  /// In en, this message translates to:
+  /// **'Loading data...'**
+  String get loadingData;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/app_localizations_ar.dart

@@ -650,4 +650,13 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get cannotUpdateHeadlineError =>
       'لا يمكن التحديث: لم يتم تحميل بيانات العنوان الأصلية.';
+
+  @override
+  String get createHeadline => 'إنشاء عنوان';
+
+  @override
+  String get headlineCreatedSuccessfully => 'تم إنشاء العنوان بنجاح.';
+
+  @override
+  String get loadingData => 'جاري تحميل البيانات...';
 }

lib/l10n/app_localizations_en.dart

@@ -648,4 +648,13 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get cannotUpdateHeadlineError =>
       'Cannot update: Original headline data not loaded.';
+
+  @override
+  String get createHeadline => 'Create Headline';
+
+  @override
+  String get headlineCreatedSuccessfully => 'Headline created successfully.';
+
+  @override
+  String get loadingData => 'Loading data...';
 }

lib/l10n/arb/app_ar.arb

@@ -788,4 +788,17 @@
   "@cannotUpdateHeadlineError": {
     "description": "رسالة خطأ عند فشل تحديث العنوان بسبب عدم تحميل البيانات الأصلية"
   }
+,
+  "createHeadline": "إنشاء عنوان",
+  "@createHeadline": {
+    "description": "عنوان صفحة إنشاء عنوان"
+  },
+  "headlineCreatedSuccessfully": "تم إنشاء العنوان بنجاح.",
+  "@headlineCreatedSuccessfully": {
+    "description": "رسالة تُعرض عند إنشاء العنوان بنجاح"
+  },
+  "loadingData": "جاري تحميل البيانات...",
+  "@loadingData": {
+    "description": "رسالة عامة تُعرض أثناء تحميل البيانات لنموذج"
+  }
 }

lib/l10n/arb/app_en.arb

@@ -790,4 +790,17 @@
   "@cannotUpdateHeadlineError": {
     "description": "Error message when updating a headline fails because the original data wasn't loaded"
   }
+,
+  "createHeadline": "Create Headline",
+  "@createHeadline": {
+    "description": "Title for the Create Headline page"
+  },
+  "headlineCreatedSuccessfully": "Headline created successfully.",
+  "@headlineCreatedSuccessfully": {
+    "description": "Message displayed when a headline is created successfully"
+  },
+  "loadingData": "Loading data...",
+  "@loadingData": {
+    "description": "Generic message displayed while loading data for a form"
+  }
 }