Add full project structure: backend API + frontend

- Move repo to project root to include both public/ and api/
- Add .gitignore excluding node_modules and .env
- Include API routes (erase, gmail_oauth), services (mailer), and config

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "resetea-api",
+  "version": "1.0.0",
+  "description": "RESETEA.NET — API backend para solicitudes GDPR",
+  "main": "app.js",
+  "scripts": {
+    "start": "node app.js",
+    "dev": "node --watch app.js"
+  },
+  "engines": { "node": ">=18" },
+  "dependencies": {
+    "express": "^4.19.2",
+    "helmet": "^7.1.0",
+    "express-rate-limit": "^7.3.1",
+    "nodemailer": "^6.9.13",
+    "googleapis": "^144.0.0",
+    "dotenv": "^16.4.5"
+  }
+}