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/parse5/lib/index.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const Parser = require('./parser');
+const Serializer = require('./serializer');
+
+// Shorthands
+exports.parse = function parse(html, options) {
+    const parser = new Parser(options);
+
+    return parser.parse(html);
+};
+
+exports.parseFragment = function parseFragment(fragmentContext, html, options) {
+    if (typeof fragmentContext === 'string') {
+        options = html;
+        html = fragmentContext;
+        fragmentContext = null;
+    }
+
+    const parser = new Parser(options);
+
+    return parser.parseFragment(html, fragmentContext);
+};
+
+exports.serialize = function(node, options) {
+    const serializer = new Serializer(node, options);
+
+    return serializer.serialize();
+};