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/axobject-query/lib/etc/objects/UserInterfaceTooltipRole.js

@@ -0,0 +1,17 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var UserInterfaceTooltipRole = {
+  relatedConcepts: [{
+    module: 'ARIA',
+    concept: {
+      name: 'tooltip'
+    }
+  }],
+  type: 'structure'
+};
+var _default = UserInterfaceTooltipRole;
+exports.default = _default;