Website Down Time Monitoring for n8n

### Website downtime monitoring with logging
Sample Sheet: https://docs.google.com/spreadsheets/d/1_VVpkIvpYQigw5q0KmPXUAC2aV2rk1nRQLQZ7YK2KwY/edit?usp=sharing
- Sheet 1 - Add domain list for monitoring.
- Sheet 2 - Store all downtime logs.


Create new assistant in Vapi and set First message as below.
- Hello {{name}}, I'm Website Monitoring Assistant. This is a system alert. The {{web_domain}} is currently down. Please take immediate action to investigate and resolve the issue. Thank you.