feat(localization): expand language support and enhance UI for user settings

- Added support for additional UI locales including Cebuano and Spanish, improving accessibility for a broader user base.
- Updated language selection components in the AppHeader and SettingsWidget to reflect new language options, enhancing user experience.
- Enhanced localization of various UI elements across components, ensuring consistent language representation and improved user engagement.
- Implemented logic to synchronize user language preferences with backend settings, providing a seamless experience when changing languages.

frontend/src/i18n/locales/ceb/navigation.json

@@ -16,7 +16,7 @@
             "eroticChat": "Erotik chat"
         },
         "m-socialnetwork": {
-            "guestbook": "Guestbook",
+            "guestbook": "Libro sa bisita",
             "blog": "Blog",
             "usersearch": "Pagpangita og user",
             "forum": "Forum",
@@ -62,7 +62,7 @@
             "interests": "Mga interes",
             "notifications": "Mga pahibalo",
             "sexuality": "Sekswalidad",
-            "languageAssistant": "Language assistant"
+            "languageAssistant": "Katabang sa pinulongan"
         },
         "m-administration": {
             "contactrequests": "Mga hangyo sa kontak",