Add settings page for managing forecasting API key and URL via UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/workbox-google-analytics/index.js

@@ -0,0 +1,13 @@
+/*
+  Copyright 2018 Google LLC
+
+  Use of this source code is governed by an MIT-style
+  license that can be found in the LICENSE file or at
+  https://opensource.org/licenses/MIT.
+*/
+import { initialize } from './initialize.js';
+import './_version.js';
+/**
+ * @module workbox-google-analytics
+ */
+export { initialize };