Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/workbox-precaching/utils/generateURLVariations.d.ts

@@ -0,0 +1,13 @@
+import { PrecacheRouteOptions } from '../_types.js';
+import '../_version.js';
+/**
+ * Generator function that yields possible variations on the original URL to
+ * check, one at a time.
+ *
+ * @param {string} url
+ * @param {Object} options
+ *
+ * @private
+ * @memberof workbox-precaching
+ */
+export declare function generateURLVariations(url: string, { ignoreURLParametersMatching, directoryIndex, cleanURLs, urlManipulation, }?: PrecacheRouteOptions): Generator<string, void, unknown>;