Function useLeaderboard

useLeaderboard(): {
    clear: () => void;
    leaderboard: LeaderboardEntry[];
    saveScore: (name: string, score: number) => void;
}
React hook for managing a persistent leaderboard stored in localStorage.

Scores are stored under the leaderboard key and sorted in descending order. If a player already exists, their score is only updated if the new score is higher.

Returns {
    clear: () => void;
    leaderboard: LeaderboardEntry[];
    saveScore: (name: string, score: number) => void;
}
An object containing:
- leaderboard: Sorted leaderboard entries.
- saveScore: Function to add or update a player's score.
- clear: Function to reset the leaderboard.
- clear: () => void
  Clears all leaderboard entries.
- leaderboard: LeaderboardEntry[]
- saveScore: (name: string, score: number) => void
  Saves or updates a player's score.
  
  If the player already exists, their score will only be updated if the new score is higher than the existing one.
Example
```
const { leaderboard, saveScore, clear } = useLeaderboard();
saveScore('Alice', 100);
```
- Defined in hooks/useLeaderboard.ts:33