Refactor index page

Display all interactives and redesign using cards.

src/pages/TernaryNumberGamePage.tsx

@@ -0,0 +1,13 @@
+import TernaryNumberGame from '@/components/TernaryNumberGame';
+
+const TernaryNumberGamePage = () => {
+  return (
+    <div className="min-h-screen bg-background p-6">
+      <div className="max-w-4xl mx-auto">
+        <TernaryNumberGame />
+      </div>
+    </div>
+  );
+};
+
+export default TernaryNumberGamePage;