refactor(logger): improve readability and modularity

[Gabriel-Ladzaretti]

Changes

Context

This improves modularity and usability in other Renovate wrapper projects.

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How I've tested my work (please select one)

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[Gabriel-Ladzaretti]

there was ai had a bug in with the logFactory and the way the logging attributes were handled.
it has been fixed, and I also improved some of the unit tests that didnt catch it initially.

can we please review it again? thanks a lot.

cc @viceice @secustor

[viceice]

please split the fix from this refactoring

[Gabriel-Ladzaretti]

please split the fix from this refactoring

but thats impossible, its a bug i introduced in this pr 😅.
maybe i should have improved my phrasing in the commend i made.

[viceice]

let's improve further in next pr

[renovate-release]

🎉 This PR is included in version 39.72.2 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)
• 39.72.2

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