compute proper rank

src/model/highscore.rs

@@ -9,12 +9,11 @@ pub(crate) struct Rank {
 
 impl Backend {
     pub(crate) async fn highscore(&self) -> Vec<Rank> {
-        // TODO: proper rank calculation
         match self {
             Backend::Sqlite(db) => sqlx::query_as!(
                 Rank,
                 "SELECT 
-                    1 as rank,
+                    RANK() OVER (ORDER BY COUNT(s.client_uuid) DESC) as rank,
                     c.name,
                     c.uuid,
                     COUNT(s.client_uuid) as amount