Restructure project to root layout

src/hooks/useServiceWorker.ts

@@ -0,0 +1,16 @@
+import { useEffect, useState } from 'react';
+
+export const useServiceWorker = () => {
+  const [registered, setRegistered] = useState(false);
+
+  useEffect(() => {
+    if ('serviceWorker' in navigator) {
+      navigator.serviceWorker
+        .register('/service-worker.js')
+        .then(() => setRegistered(true))
+        .catch(() => setRegistered(false));
+    }
+  }, []);
+
+  return registered;
+};