Book demo model and functionalities added

package.json

@@ -33,6 +33,7 @@
     "jodit-react": "^5.2.26",
     "lucide-react": "^0.544.0",
     "next": "^16.0.10",
+    "nodemailer": "^8.0.3",
     "react": "^19.2.3",
     "react-day-picker": "^9.11.0",
     "react-dom": "^19.2.3",
@@ -45,6 +46,7 @@
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
     "@types/node": "^20",
+    "@types/nodemailer": "^7.0.11",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "baseline-browser-mapping": "^2.9.19",