Added compile code for mail templates

package.json

@@ -21,6 +21,7 @@
   "dependencies": {
     "@prisma/client": "^3.3.0",
     "@types/jsonwebtoken": "^8.5.5",
+    "@types/mjml": "^4.7.0",
     "@types/node": "^16.10.3",
     "@types/nodemailer": "^6.4.4",
     "@types/redis": "^2.8.32",
@@ -28,6 +29,7 @@
     "dotenv": "^10.0.0",
     "express": "^4.17.1",
     "jsonwebtoken": "^8.5.1",
+    "mjml": "^4.11.0",
     "nodemailer": "^6.7.0",
     "redis": "^3.1.2"
   },