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/get-symbol-description/getInferredName.js

@@ -0,0 +1,13 @@
+'use strict';
+
+/** @type {NonNullable<import('./getInferredName')> | undefined} */
+var getInferredName;
+try {
+	// eslint-disable-next-line no-new-func, no-extra-parens
+	getInferredName = /** @type {NonNullable<import('./getInferredName')>} */ (Function('s', 'return { [s]() {} }[s].name;'));
+} catch (e) {}
+
+var inferred = function () {};
+
+/** @type {import('./getInferredName')} */
+module.exports = getInferredName && inferred.name === 'inferred' ? getInferredName : null;