feat: add settings page titles

- Added theme settings title
- Added font settings title
- Added language settings title

Author: fulleni

lib/l10n/arb/app_ar.arb

@@ -516,6 +516,18 @@
     "@settingsAppearanceFontFamilySystemDefault": {
         "description": "Label for the system default font family option"
     },
+    "settingsAppearanceThemeSubPageTitle": "إعدادات المظهر",
+    "@settingsAppearanceThemeSubPageTitle": {
+        "description": "Title for the theme settings sub-page under appearance"
+    },
+    "settingsAppearanceFontSubPageTitle": "إعدادات الخط",
+    "@settingsAppearanceFontSubPageTitle": {
+        "description": "Title for the font settings sub-page under appearance"
+    },
+    "settingsLanguageTitle": "اللغة",
+    "@settingsLanguageTitle": {
+        "description": "Title for the language settings page/section"
+    },
     "emailCodeSentPageTitle": "أدخل الرمز",
     "@emailCodeSentPageTitle": {
         "description": "AppBar title for the email code verification page"

lib/l10n/arb/app_en.arb

@@ -516,6 +516,18 @@
     "@settingsAppearanceFontFamilySystemDefault": {
         "description": "Label for the system default font family option"
     },
+    "settingsAppearanceThemeSubPageTitle": "Theme Settings",
+    "@settingsAppearanceThemeSubPageTitle": {
+        "description": "Title for the theme settings sub-page under appearance"
+    },
+    "settingsAppearanceFontSubPageTitle": "Font Settings",
+    "@settingsAppearanceFontSubPageTitle": {
+        "description": "Title for the font settings sub-page under appearance"
+    },
+    "settingsLanguageTitle": "Language",
+    "@settingsLanguageTitle": {
+        "description": "Title for the language settings page/section"
+    },
     "emailCodeSentPageTitle": "Enter Code",
     "@emailCodeSentPageTitle": {
         "description": "AppBar title for the email code verification page"