🌍 Add Top-Countries, Top-Meetups, and Activities dashboard components

- Introduced three new Livewire components for the dashboard:
  - Top Countries: Displays countries with the most users.
  - Top Meetups: Highlights meetups with the largest user counts.
  - Activities: Showcases recent meetups and events.
- Updated `dashboard.blade.php` to lazy-load these components.
- Expanded multilingual support for relevant labels across all languages.

lang/de.json

@@ -460,5 +460,16 @@
     "Über den Kurs": "",
     "Über uns": "",
     "Alle Meetups": "",
-    "Welt-Karte": ""
+    "Welt-Karte": "",
+    "Aktivitäten": "",
+    "Neue Meetups und Termine": "",
+    "Neues Meetup": "",
+    "Neuer Termin": "",
+    "Keine Aktivitäten": "",
+    "Top Länder": "",
+    "Länder mit den meisten Usern": "",
+    "User": "",
+    "Keine Daten verfügbar": "",
+    "Top Meetups": "",
+    "Meetups mit den meisten Usern": ""
 }