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/jest-each/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "jest-each",
+  "version": "27.5.1",
+  "description": "Parameterised tests for Jest",
+  "main": "./build/index.js",
+  "types": "./build/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./build/index.d.ts",
+      "default": "./build/index.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/jest.git",
+    "directory": "packages/jest-each"
+  },
+  "keywords": [
+    "jest",
+    "parameterised",
+    "test",
+    "each"
+  ],
+  "author": "Matt Phillips (mattphillips)",
+  "license": "MIT",
+  "dependencies": {
+    "@jest/types": "^27.5.1",
+    "chalk": "^4.0.0",
+    "jest-get-type": "^27.5.1",
+    "jest-util": "^27.5.1",
+    "pretty-format": "^27.5.1"
+  },
+  "engines": {
+    "node": "^10.13.0 || ^12.13.0 || ^14.15.0 || >=15.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "gitHead": "67c1aa20c5fec31366d733e901fee2b981cb1850"
+}