[feature] generate linkage CSV of UIDs to FilePath for extractions

[rkm]

We have received a request to create a CSV file which links DICOM UIDs to the output FilePath to improve the ease of creating downstream scripts.

This should be a simple CSV with header StudyInstanceUID,SeriesInstanceUID,SOPInstanceUID,FilePath

[jas88]

I have a tool for this called DicomAudit which matches that with a different order and the addition of Modality.

[howff]

Oh, my tool for reviewing DICOM images for PII burned into the pixels is called dcmaudit - possible naming confusion!

[jas88]

I'd already used dsm2csv for the SR ICD11 extraction tool, but they have a fair bit in common - maybe I'll merge the two under that name and retire the DicomAudit one.