[WIP] Refactor logging 3/n [v0]

[tchaton]

What does this PR do?

This PR adds logging within callbacks for evaluation.

Fixes #3813

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[pep8speaks]

Hello @tchaton! Thanks for updating this PR.

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2020-11-06 12:58:45 UTC