[CAMEL-FILE] Enhance logging in FileConsumer to aid debugging

[Brahmam0856]

This pull request introduces a minor but helpful enhancement in the camel-file component:

• What was added: A new log statement in FileConsumer.java to output file names as they are picked up for processing.
• Why: It aids developers in debugging and monitoring file route behavior without relying on external logging configuration.
• Impact: Non-breaking change. Behavior remains identical, only log visibility is improved. Safe for all existing use cases.

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Target

• I checked that the commit is targeting the correct branch (main for Camel 4)

Tracking

• No JIRA issue required—this is a trivial enhancement for visibility and developer experience.

Coding Standards & Style

• Commit message is clear and scoped

• Code was formatted and built using:

  bash
  mvn clean install -DskipTests

[github-actions]

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[oscerd]

I see nothing

[oscerd]

Please, re-open once there is something to review. Thanks