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-recipes/warmStrategyCache.js

@@ -0,0 +1,18 @@
+import './_version.js';
+/**
+ * @memberof workbox-recipes
+ 
+ * @param {Object} options
+ * @param {string[]} options.urls Paths to warm the strategy's cache with
+ * @param {Strategy} options.strategy Strategy to use
+ */
+function warmStrategyCache(options) {
+    self.addEventListener('install', (event) => {
+        const done = options.urls.map((path) => options.strategy.handleAll({
+            event,
+            request: new Request(path),
+        })[1]);
+        event.waitUntil(Promise.all(done));
+    });
+}
+export { warmStrategyCache };