feat: Add email service for authentication flows, including email verification and password reset.

package.json

@@ -31,6 +31,7 @@
     "cloudinary": "^2.8.0",
     "jose": "3.16.0",
     "multer": "^2.0.2",
+    "nodemailer": "^7.0.11",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1"
   },
@@ -43,6 +44,7 @@
     "@types/express": "^5.0.0",
     "@types/jest": "^30.0.0",
     "@types/node": "^22.10.7",
+    "@types/nodemailer": "^7.0.4",
     "@types/supertest": "^6.0.2",
     "eslint": "^9.18.0",
     "eslint-config-prettier": "^10.0.1",