Add default anonymisation config for radiotherapy data

[p-j-smith]

Description

Fixes #518

• add tag operation config for files for RTDOSE, RTPLAN, and RTSTRUCT modalities
• add test project config for radiotherapy data

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 78.43%. Comparing base (80f5dcf) to head (00bc356). Report is 2 commits behind head on main.

:exclamation: There is a different number of reports uploaded between BASE (80f5dcf) and HEAD (00bc356). Click for more details.

HEAD has 2 uploads less than BASE

| Flag | BASE (80f5dcf) | HEAD (00bc356) | |------|------|------| ||8|6|

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #521 +/- ## ========================================== - Coverage 87.15% 78.43% -8.72% ========================================== Files 76 59 -17 Lines 3464 2435 -1029 ========================================== - Hits 3019 1910 -1109 - Misses 445 525 +80 ```

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