New Feature: Health Check Script + SMS Notifications

[adrastosefa]

I had the team implement a new health check script and SMS notification system to OpenEFA. This adds real-time monitoring and alerts for critical events and security items.

Key features:
Automated health checks for system status monitoring
SMS notifications for key events and security alerts
Built using Python with ClickSend API integration
This should help keep you informed of important system events even when you're away from your dashboard. The notifications trigger on security events and other critical items to ensure you never miss what matters.

Feedback and testing welcome!