Add monitorType JMX

[alaturqua]

Description

This pull request introduces a new monitorType for JMX-based monitoring in Trino Gateway. It includes documentation and configuration details for retrieving cluster information using specific JMX metrics.

Details

• Component: JMX Monitoring in Trino Gateway
• New Feature: Added support for monitorType: JMX to enable cluster monitoring via JMX metrics.
• Metrics Used:
  • trino.execution:name=QueryManager
  • trino.metadata:name=DiscoveryNodeManager
• Configuration Instructions:
  • Users can configure a username and password using backendState.
  • Credentials must be valid across all clusters with read rights on system_information.

• Example Configuration:

  backendState:
  username: "user"
  password: "password"
  clusterStatsConfiguration:
  monitorType: JMX

  Additional context and related issues

Release notes

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[alaturqua]

I am not very experienced with Java and Testing in Java. Please feel free to add tests.

[alaturqua]

Thanks for the reviews. I was on vacation and didn't have time to implement the requested changes yet. I will take care of them in the next days.

I might need some support to activate the /v1/jmx/mbean endpoint in the test environment for testing.

[willmostly]

@alaturqua please ping me when this is ready for another look

[alaturqua]

I had to sync my fork to be able to change my PR. But it got automatically closed, when I did so. I am reopening.