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/js-beautify/js/bin/css-beautify.js

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+var cli = require('../lib/cli'); cli.interpret();
+
+

node_modules/js-beautify/js/bin/html-beautify.js

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+var cli = require('../lib/cli'); cli.interpret();
+
+

node_modules/js-beautify/js/bin/js-beautify.js

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+
+var cli = require('../lib/cli');
+cli.interpret();