Update routes and add index.html

src/http_server.rs

@@ -35,10 +35,10 @@ pub async fn http_serve(database: &Database, mpris_producer: Sender<(String, Str
         .fallback_service(ServeDir::new("static"))
         .route("/stats", get(get_stats))
         .route("/", get(root))
-        .route("/rating/:rating", get(cache_rating_only))
-        .route("/userid/:user_id", get(add_userid))
-        .route("/usercard/:user_card", get(add_userid_by_card))
-        .route("/:user_id/:rating", get(add_rating))
+        .route("/rating/{rating}", get(cache_rating_only))
+        .route("/userid/{user_id}", get(add_userid))
+        .route("/usercard/{user_card}", get(add_userid_by_card))
+        .route("/{user_id}/{rating}", get(add_rating))
         .with_state(shared_state);
 
     let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();