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/@svgr/core/lib/index.js

@@ -0,0 +1,20 @@
+"use strict";
+
+exports.__esModule = true;
+var _exportNames = {};
+exports.default = void 0;
+
+var _convert = _interopRequireDefault(require("./convert"));
+
+exports.default = _convert.default;
+
+var _config = require("./config");
+
+Object.keys(_config).forEach(function (key) {
+  if (key === "default" || key === "__esModule") return;
+  if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+  if (key in exports && exports[key] === _config[key]) return;
+  exports[key] = _config[key];
+});
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }