🌐 Introduce dynamic domain-based locale and country handling

- Added `DomainMiddleware` to dynamically set locale, language-country session, and app name based on domain.
- Updated views and components to leverage `lang_country` session for language and region-specific content.
- Enhanced country parameter retrieval with `config('app.domain_country')` as fallback.
- Refined language filtering by scanning available language files dynamically.
- Added language-specific assets and translations (`nl.json`, `es.json`) with improved language-region associations.
- Updated `app-logo-icon` to display region-specific images or default SVGs.
- Improved views with cleaner, dynamic rendering and session-aware functionalities.

lang/en.json

@@ -440,5 +440,22 @@
     "Öffnen/RSVP": "Open/RSVP",
     "Über den Dozenten": "About the lecturer",
     "Über den Kurs": "About the course",
-    "Über uns": "About us"
+    "Über uns": "About us",
+    "Details": "Details",
+    "Die Endzeit muss nach der Startzeit liegen.": "The end time must be after the start time.",
+    "Startdatum": "Start date",
+    "An welchem Tag beginnt das Event?": "On which day does the event start?",
+    "Um wie viel Uhr beginnt das Event?": "At what time does the event start?",
+    "Enddatum": "End date",
+    "An welchem Tag endet das Event?": "On which day does the event end?",
+    "Um wie viel Uhr endet das Event?": "At what time does the event end?",
+    "Datum": "Date",
+    "An welchem Tag findet das Event statt?": "On which day does the event take place?",
+    "Uhrzeit": "Time",
+    "Um wie viel Uhr startet das Event?": "At what time does the event start?",
+    "Zeitzone": "Timezone",
+    "Wähle deine Zeitzone aus...": "Select your timezone...",
+    "Zeitzone erfolgreich aktualisiert": "Timezone successfully updated",
+    "Wähle deine Zeitzone...": "Choose your timezone...",
+    "Suche Zeitzone...": "Search timezone..."
 }