Focus player records and add squad leaderboards

src/lib/leaderboard.ts

@@ -101,9 +101,12 @@ export interface LeaderboardMap {
     name: string;
 }
 
+export type LeaderboardPlayerCount = 1 | 2 | 3 | 4;
+
 export interface LeaderboardOptions {
     game?: string;
     map?: string;
+    players?: LeaderboardPlayerCount;
     metric?: LeaderboardMetric;
     q?: string;
     limit?: number;