Implement proof of concept push notifications

public/sw.js

@@ -0,0 +1,25 @@
+self.addEventListener("push", function (event) {
+	console.log(event);
+	if (!event.data)
+		return;
+
+	const payload = event.data.json();
+	const { body, icon, image, badge, url, title } = payload;
+	const notificationTitle = title ?? "No title";
+	const notificationOptions = {
+		body,
+		icon,
+		image,
+		data: {
+			url,
+		},
+		badge,
+	};
+
+	event.waitUntil(
+		self.registration.showNotification(notificationTitle, notificationOptions)
+			.then(() => {
+				console.log("Web push delivered");
+			})
+	);
+});