🌐 Add 'all-meetups' route and update sidebar to include global meetup view

- Introduced `all-meetups` route (`meetups.index-all`) for accessing meetups globally.
- Updated sidebar with a new navigation item for global meetups, including icon and dynamic badge count.
- Enhanced backend logic to handle country-specific and global meetup filtering based on the current route.

lang/de.json

@@ -458,5 +458,7 @@
     "Öffnen/RSVP": "",
     "Über den Dozenten": "",
     "Über den Kurs": "",
-    "Über uns": ""
+    "Über uns": "",
+    "Alle Meetups": "",
+    "Welt-Karte": ""
 }

lang/en.json

@@ -458,5 +458,7 @@
     "Öffnen/RSVP": "Open/RSVP",
     "Über den Dozenten": "About the lecturer",
     "Über den Kurs": "About the course",
-    "Über uns": "About us"
-}
+    "Über uns": "About us",
+    "Alle Meetups": "All Meetups",
+    "Welt-Karte": "World Map"
+}

lang/es.json

@@ -457,5 +457,7 @@
     "Öffnen/RSVP": "Abrir/RSVP",
     "Über den Dozenten": "Sobre el profesor",
     "Über den Kurs": "Sobre el curso",
-    "Über uns": "Sobre nosotros"
-}
+    "Über uns": "Sobre nosotros",
+    "Alle Meetups": "Todos los encuentros",
+    "Welt-Karte": "Mapa mundial"
+}

lang/hu.json

@@ -452,5 +452,7 @@
     "Öffnen/RSVP": "Megnyitás/RSVP",
     "Über den Dozenten": "Az oktatóról",
     "Über den Kurs": "A kurzusról",
-    "Über uns": "Rólunk"
-}
+    "Über uns": "Rólunk",
+    "Alle Meetups": "Minden meetup",
+    "Welt-Karte": "Világtérkép"
+}

lang/nl.json

@@ -454,5 +454,7 @@
     "Öffnen/RSVP": "Openen/RSVP",
     "Über den Dozenten": "Over de docent",
     "Über den Kurs": "Over de cursus",
-    "Über uns": "Over ons"
-}
+    "Über uns": "Over ons",
+    "Alle Meetups": "Alle Meetups",
+    "Welt-Karte": "Wereldkaart"
+}

lang/pt.json

@@ -452,5 +452,7 @@
     "Öffnen/RSVP": "Abrir/RSVP",
     "Über den Dozenten": "Sobre o professor",
     "Über den Kurs": "Sobre o curso",
-    "Über uns": "Sobre nós"
-}
+    "Über uns": "Sobre nós",
+    "Alle Meetups": "Todos os Meetups",
+    "Welt-Karte": "Mapa Mundial"
+}