Add debug logging to start of run

[davidjgoss]

🤔 What's changed?

Add some debug-level logging to the start of the run, emitting the working directory and the __dirname of the runCucumber function.

⚡️ What's your motivation?

To help diagnose #2353.

📋 Checklist:

• I agree to respect and uphold the Cucumber Community Code of Conduct
• I've changed the behaviour of the code
  • I have added/updated tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

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[coveralls]

coverage: 97.961% (+0.002%) from 97.959%
when pulling b159582 on feat/logging-start-of-run
into 1901ec8 on main.