Fix Monitor Service Configuration and Error Handling-created-by-agentic

[shaykeren]

This PR addresses the critical monitor service failures by:

1. Adding proper OpenTelemetry configuration in application.properties
2. Implementing robust error handling in MonitorService
3. Adding validation for OpenTelemetry resource attributes
4. Including proper logging for monitoring events

Changes:

• Updated MonitorService.java with proper error handling and validation
• Added OpenTelemetry configuration in application.properties
• Implemented resource attribute validation

Testing:

• Verified OpenTelemetry configuration loading
• Tested error handling scenarios
• Validated resource attributes checking

Fixes IllegalStateException in MonitorService.monitor() and improves overall monitoring reliability.