ServiceWorker (#1243)

- Create service worker to have PWA
 - Add install service worker
 - Add fecth service worker with a persistent cache navigator
 - Add favicon 512x512

front/src/index.ts

@@ -160,3 +160,15 @@ const app = new App({
 })
 
 export default app
+
+if ('serviceWorker' in navigator) {
+    window.addEventListener('load', function () {
+        navigator.serviceWorker.register('/resources/service-worker.js')
+            .then(serviceWorker => {
+                console.log("Service Worker registered: ", serviceWorker);
+            })
+            .catch(error => {
+                console.error("Error registering the Service Worker: ", error);
+            });
+    });
+}