Define default de-identification for IoN-DRI MRI projects

Definition of Done / Acceptance Criteria

The deidentification process is clearly documented and as a user, I can access this and see how my data has been deidentified

[x] Default defined for IoN DRI projects based on the ms-pinpoint tags
[x] Feedback from at least one IoN DRI user on the processing of tags

Testing

[x] Ensure no warning generated from the dicom validator with the default profile

Documentation

[x] document our default MRI de-identification choices

Dependencies

[x] no validation warnings from dicom validator (closing off #418)

Details and Comments

Probably a good place to start is the ms-pinpoint project de-identification, not keeping the study date as default.

tag_operation_files:
    base:
        - "mri.yaml"
    manufacturer_overrides: ["mri.yaml"]

Will need to update the mri.yaml base file to ensure that patient sex, date of birth are ~overriden~ (overwritten?) with a fixed value instead of being deleted so that we don't get validation warnings. Might also be worth breaking out into two files, so that we have base.yaml for any modality, and then mri.yaml which adds in MRI-specific tags. https://dicom.innolitics.com/ciods isn't a bad place to see where tags are used at a higher level

Could do #418 before the rest of the other work to ensure that our configurations are DICOM standard compliant first

SAFEHR-data / PIXL