Adding the skeleton QR code

frontend/src/App.tsx

@@ -0,0 +1,12 @@
+import QRComponent from '@templates/QrCodeComponent';
+import styles from '@styles/App.module.scss';
+
+function App() {
+  return (
+    <div className={styles.body}>
+      <QRComponent />
+    </div>
+  );
+}
+
+export default App;