only pull dd.* attributes to the top level of loguru records

[emmettbutler]

https://github.com/DataDog/dd-trace-py/issues/9666

Checklist

• [ ] Change(s) are motivated and described in the PR description
• [ ] Testing strategy is described if automated tests are not included in the PR
• [ ] Risks are described (performance impact, potential for breakage, maintainability)
• [ ] Change is maintainable (easy to change, telemetry, documentation)
• [ ] Library release note guidelines are followed or label changelog/no-changelog is set
• [ ] Documentation is included (in-code, generated user docs, public corp docs)
• [ ] Backport labels are set (if applicable)
• [ ] If this PR changes the public interface, I've notified @DataDog/apm-tees.

Reviewer Checklist

• [ ] Title is accurate
• [ ] All changes are related to the pull request's stated goal
• [ ] Description motivates each change
• [ ] Avoids breaking API changes
• [ ] Testing strategy adequately addresses listed risks
• [ ] Change is maintainable (easy to change, telemetry, documentation)
• [ ] Release note makes sense to a user of the library
• [ ] Author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• [ ] Backport labels are set in a manner that is consistent with the release branch maintenance policy

[datadog-dd-trace-py-rkomorn[bot]]

Datadog Report

Branch report: emmett.butler/loguru-extras Commit report: cc0427a Test service: dd-trace-py

:white_check_mark: 0 Failed, 137509 Passed, 39150 Skipped, 9h 1m 12.58s Total duration (1h 47m 53.71s time saved)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 10.43%. Comparing base (4acfde7) to head (cc0427a). Report is 11 commits behind head on main.

Files	Patch %	Lines
ddtrace/contrib/loguru/patch.py	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #9676 +/- ## =========================================== - Coverage 74.65% 10.43% -64.22% =========================================== Files 1381 1353 -28 Lines 127965 126277 -1688 =========================================== - Hits 95531 13182 -82349 - Misses 32434 113095 +80661 ```

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[pr-commenter[bot]]

Benchmarks

Benchmark execution time: 2024-06-28 19:09:44

Comparing candidate commit cc0427afad18767c70dec86fc53cf118c71ab218 in PR branch emmett.butler/loguru-extras with baseline commit 09b537d2857de00aae9d31792a2a001dcb7825b6 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 209 metrics, 9 unstable metrics.