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-range-requests/RangeRequestsPlugin.d.ts

@@ -0,0 +1,26 @@
+import { WorkboxPlugin } from 'workbox-core/types.js';
+import './_version.js';
+/**
+ * The range request plugin makes it easy for a request with a 'Range' header to
+ * be fulfilled by a cached response.
+ *
+ * It does this by intercepting the `cachedResponseWillBeUsed` plugin callback
+ * and returning the appropriate subset of the cached response body.
+ *
+ * @memberof workbox-range-requests
+ */
+declare class RangeRequestsPlugin implements WorkboxPlugin {
+    /**
+     * @param {Object} options
+     * @param {Request} options.request The original request, which may or may not
+     * contain a Range: header.
+     * @param {Response} options.cachedResponse The complete cached response.
+     * @return {Promise<Response>} If request contains a 'Range' header, then a
+     * new response with status 206 whose body is a subset of `cachedResponse` is
+     * returned. Otherwise, `cachedResponse` is returned as-is.
+     *
+     * @private
+     */
+    cachedResponseWillBeUsed: WorkboxPlugin['cachedResponseWillBeUsed'];
+}
+export { RangeRequestsPlugin };