feat: add automatic logging config to support debug logging (#754)

* feat: add base logger to enable debug logging

* address PR feedback

* address PR feedback

* add tests

* address PR feedback

* address PR feedback

* address PR feedback

* address PR feedback

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* address PR feedback

* address PR feedback

* address PR feedback

* add coverage for already configured scope

* Add partial documentation; clarify test base logger

* address PR feedback

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

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Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Victor Chudnovsky <vchudnov@google.com>
Co-authored-by: Anthonios Partheniou <partheniou@google.com>