Log service worker events and add extension API when SW updates

e.g. you could use this extension API to show the user that an update is
available and they should update.

lib/intermediate-representation-dir/production-app.js

@@ -28,8 +28,22 @@ try {
 
 // Install service worker.
 runtime.install({
-  onInstalled () {
-    console.log(`App is ready for offline usage`)
+  onInstalled: () => {
+    console.log("SW Event:", "onInstalled")
+  },
+  onUpdating: () => {
+    console.log("SW Event:", "onUpdating")
+  },
+  onUpdateReady: () => {
+    console.log("SW Event:", "onUpdateReady")
+    runtime.applyUpdate()
+  },
+  onUpdated: () => {
+    console.log("SW Event:", "onUpdated")
+    apiRunner('swOnUpdated')
+  },
+  onUninstalled: () => {
+    console.log("SW Event:", "onUninstalled")
   },
 })