feat(scripts): add send-email script using nodemailer

Add a sandboxed send-email.js workflow script with SMTP settings
exposed via script config and password loaded from named secrets.
Allow nodemailer in the script sandbox require whitelist.

Co-authored-by: Nasyarobby Putra <nasyarobby@gmail.com>

packages/server/package.json

@@ -22,6 +22,7 @@
     "knex": "^3.3.0",
     "node-cron": "^4.6.0",
     "node-html-parser": "^9.0.1",
+    "nodemailer": "^9.0.5",
     "pino": "^10.3.1",
     "pino-roll": "^4.0.0",
     "yaml": "^2.9.0"