🌐 Replace manual language selection with reusable language selector component and add Hungarian translations

- Replaced inline language selection logic in `profile.blade.php` with `<x-einundzwanzig.language-selector>`.
- Introduced Hungarian (`hu.json`) translations for improved multilingual support.
- Updated `DomainMiddleware` to include settings for Hungarian locale and portal branding.

lang/en.json

@@ -459,4 +459,4 @@
     "Über den Kurs": "About the course",
     "Über uns": "About us",
     "Einundzwanzig Portal": "Twenty One Portal"
-}
+}