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/lucide-react/dist/esm/icons/highlighter.mjs

@@ -0,0 +1,19 @@
+/**
+ * lucide-react v0.0.1 - ISC
+ */
+
+import createLucideIcon from '../createLucideIcon.mjs';
+
+const Highlighter = createLucideIcon("Highlighter", [
+  ["path", { d: "m9 11-6 6v3h9l3-3", key: "1a3l36" }],
+  [
+    "path",
+    {
+      d: "m22 12-4.6 4.6a2 2 0 0 1-2.8 0l-5.2-5.2a2 2 0 0 1 0-2.8L14 4",
+      key: "14a9rk"
+    }
+  ]
+]);
+
+export { Highlighter as default };
+//# sourceMappingURL=highlighter.mjs.map