feat(logging): implement centralized logging system and replace console errors with structured logs

feat(federation): add room sync and deletion notification endpoints for federated instances

fix(federation): handle room deletion and update settings during sync process

feat(federation): enhance FederatedRoomCard and FederatedRoomDetail components to display deleted rooms

i18n: add translations for room deletion messages in English and German

src/i18n/de.json

@@ -383,6 +383,8 @@
     "recordingOnHint": "Meetings in diesem Raum können aufgezeichnet werden",
     "recordingOffHint": "Meetings in diesem Raum werden nicht aufgezeichnet",
     "roomDetails": "Raumdetails",
-    "joinUrl": "Beitritts-URL"
+    "joinUrl": "Beitritts-URL",
+    "roomDeleted": "Gelöscht",
+    "roomDeletedNotice": "Dieser Raum wurde vom Besitzer auf der Ursprungsinstanz gelöscht und ist nicht mehr verfügbar."
   }
 }

src/i18n/en.json

@@ -383,6 +383,8 @@
     "recordingOnHint": "Meetings in this room may be recorded",
     "recordingOffHint": "Meetings in this room will not be recorded",
     "roomDetails": "Room Details",
-    "joinUrl": "Join URL"
+    "joinUrl": "Join URL",
+    "roomDeleted": "Deleted",
+    "roomDeletedNotice": "This room has been deleted by the owner on the origin instance and is no longer available."
   }
 }