overhauled structure, leaderboardRoute.ts and userRoute.ts working

backend/api/src/model/Leaderboard.ts

@@ -1,7 +1,10 @@
 export type Leaderboard<T> = LeaderboardEntry<T>[];
 
+export type HighscoreLeaderboard = Leaderboard<number>;
+export type TimeLeaderboard = Leaderboard<string>;
+
 export interface LeaderboardEntry<T> {
+    username: number,
     rank: number,
-    username: string,
     score: T,
 }