Add list feature

src/main.rs

@@ -33,6 +33,14 @@ async fn main() {
                 Err(e) => eprintln!("{e}"),
             }
         } else {
+            // Check if the parameter is -l
+            if username == "-l" {
+                db.get_user_most_ratings()
+                    .await
+                    .expect("Could not get ratings");
+                return;
+            }
+
             let user_id = db.add_user(&username).await.expect("Could not add user");
             println!("UserID for {username}: {user_id}");
         }
@@ -45,7 +53,7 @@ async fn main() {
         .expect("Could not read from database");
 
     if is_empty {
-        println!("Add an user first. This can be achieved by using rate_music [name] [user_id]");
+        println!("Add a new user first. This can be achieved by using rate_music [name] [user_id]");
         return;
     }