Add servermode

src/http_server.rs

@@ -105,6 +105,8 @@ async fn add_userid_by_card(
 
     let rating = shared.rating.load(Ordering::Relaxed);
 
+    eprintln!("Received: Usercard: {user_card}, with associated rating: {rating}");
+
     let user_id = match shared.database.user_get_id(&user_card).await {
         Ok(id) => id,
         Err(e) => {