Add geolocation coordinates to server registration data

lib/services/server_service.dart

@@ -25,6 +25,10 @@ class ServerService {
         "geolocation": {
           "country_code": geolocationData.continentCode,
           "city": geolocationData.city,
+          "coords": [
+            geolocationData.latitude,
+            geolocationData.longitude
+          ],
         }
       });
     }