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/ajv-keywords/keywords/index.js

@@ -0,0 +1,22 @@
+'use strict';
+
+module.exports = {
+  'instanceof': require('./instanceof'),
+  range: require('./range'),
+  regexp: require('./regexp'),
+  'typeof': require('./typeof'),
+  dynamicDefaults: require('./dynamicDefaults'),
+  allRequired: require('./allRequired'),
+  anyRequired: require('./anyRequired'),
+  oneRequired: require('./oneRequired'),
+  prohibited: require('./prohibited'),
+  uniqueItemProperties: require('./uniqueItemProperties'),
+  deepProperties: require('./deepProperties'),
+  deepRequired: require('./deepRequired'),
+  formatMinimum: require('./formatMinimum'),
+  formatMaximum: require('./formatMaximum'),
+  patternRequired: require('./patternRequired'),
+  'switch': require('./switch'),
+  select: require('./select'),
+  transform: require('./transform')
+};