[pkg/translator/azurelogs] Support additional fields not in the common schema

[rafaelrodrigues3092]

Description

Azure resource logs are not standard, see Common and service-specific schemas for Azure resource logs.

When consuming resource logs for services like Service Bus or Event Hub, timestamp parsing fails.
The log events are also not helpful identifying the resource or resource type causing the parsing issue.

This change:

• Adds support for alternative timestamp fields: EventTimeString, EventTimestamp, startTime
• Adds alternative field for properties: EventProperties
• Improves warning logs to be able to better identify the resource and resource type that caused the parsing issue.

Link to tracking issue

Fixes #46162

Testing

• Added testing for the added fields.
• Tested two scenarios
  • Previously supported payload
  • Previously unsupported payload

Documentation

Updated Azure Event Hub Receiver ReadMe to include the additional supported fields.

Additional Notes

Assisted-by: Claude Opus 4.6

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[thompson-tomo]

Should we not be looking to introduce this in the unmarshaller so that we have consistency etc.

[paulojmdias]

/workflow-approve

[MikeGoldsmith]

Looks good to me - thanks @rafaelrodrigues3092 👍🏻

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[MikeGoldsmith]

Not stale - please can someone from @open-telemetry/collector-contrib-approvers review?

[axw]

@rafaelrodrigues3092 sorry for the delay. Looks good overall, just one question.

[atoulme]

Please address the CI and mark ready for review again.

[rafaelrodrigues3092]

lint issues fixed. Should be ready for review