combine all service-worker scripts into a single file to try and ensure included scripts aren't lost

src/registerServiceWorker.ts

@@ -3,7 +3,7 @@
 import { register } from "register-service-worker";
 
 if (process.env.NODE_ENV === "production") {
-  register("/additional-scripts.js", {
+  register("/sw_scripts-combined.js", {
     ready() {
       console.log(
         "App is being served from cache by a service worker.\n" +