Add 'utils' module export (#410)

Export core utils and assets used by RWP in /utils.
Add serviceWorkerActivated() utility promise.

---------

Co-authored-by: emma <hi@emma.cafe>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "replaywebpage",
   "productName": "ReplayWeb.page",
-  "version": "2.3.3",
+  "version": "2.3.4",
   "description": "Serverless Web Archive Replay",
   "repository": "https://github.com/webrecorder/replayweb.page",
   "homepage": "https://replayweb.page/",
@@ -13,12 +13,16 @@
       "default": "./dist/index.js"
     },
     "./src/electron-*": "./src/electron-*.ts",
-    "./index.html": "./index.html"
+    "./index.html": "./index.html",
+    "./utils": {
+      "types": "./dist/types/utils/index.d.ts",
+      "default": "./dist/utils.js"
+    }
   },
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.15.4",
     "@shoelace-style/shoelace": "~2.15.1",
-    "@webrecorder/wabac": "^2.21.3",
+    "@webrecorder/wabac": "^2.22.2",
     "bulma": "^0.9.3",
     "electron-log": "^4.4.1",
     "electron-updater": "^6.3.9",