feat: service worker preload scripts for improved extensions support (#44411)

* feat: preload scripts for service workers

* feat: service worker IPC

* test: service worker preload scripts and ipc

build/webpack/webpack.config.preload_realm.js

@@ -0,0 +1,6 @@
+module.exports = require('./webpack.config.base')({
+  target: 'preload_realm',
+  alwaysHasNode: false,
+  wrapInitWithProfilingTimeout: true,
+  wrapInitWithTryCatch: true
+});