feat: add public leaderboards with opt-out privacy setting

apps/web/src/App.tsx

@@ -2,6 +2,7 @@ import { useState } from "react";
 import { GameProvider } from "./context/GameContext.js";
 import { CharacterPage } from "./components/game/CharacterPage.js";
 import { GameLayout } from "./components/game/GameLayout.js";
+import { LeaderboardPage } from "./components/game/LeaderboardPage.js";
 import { LoginPage } from "./components/game/LoginPage.js";
 import { ProfilePage } from "./components/game/ProfilePage.js";
 
@@ -49,6 +50,10 @@ export const App = (): React.JSX.Element => {
     return <CharacterPage discordId={characterDiscordId} />;
   }
 
+  if (window.location.pathname === "/leaderboards") {
+    return <LeaderboardPage />;
+  }
+
   if (!loggedIn) {
     return <LoginPage onLogin={() => { setLoggedIn(true); }} />;
   }