Only export to endpoint if AUTOROUTE_ANON_TO_ENDPOINT is `true`

[p-j-smith]

Description

512 introduced a bug in the Orthanc Anon plugin whereby studies are always exported - this PR fixes that bug

• check the value of should_export() before calling Send() in the Orthanc Anon plugin
• improve logging in the Orthanc Anon plugin

Type of change

Please delete options accordingly to the description.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Suggested Checklist

• [ ] I have performed a self-review of my own code.
• [ ] I have made corresponding changes to the documentation.
• [ ] My changes generate no new warnings.
• [ ] I have commented my code, particularly in hard-to-understand areas.
• [ ] I have passed on my local host device. (see further details at the CONTRIBUTING document)
• [ ] Make sure your branch is up-to-date with main branch. See CONTRIBUTING for a general example to syncronise your branch with the main branch.
• [ ] I have requested review to this PR.
• [ ] I have addressed and marked as resolved all the review comments in my PR.
• [ ] Finally, I have selected squash and merge

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.13%. Comparing base (80f5dcf) to head (516d9c3). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #520 +/- ## ========================================== - Coverage 87.15% 87.13% -0.02% ========================================== Files 76 76 Lines 3464 3460 -4 ========================================== - Hits 3019 3015 -4 Misses 445 445 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.