ENH: Add raincloud plot capabilities

[jhlegarreta]

Add raincloud plot capabilities and demonstrate on the FA values of computed on a DWI volume across different tissue types.

[jhlegarreta]

Re nipreps/mriqc#1216 (comment)

FA, MD, residuals [2], etc. mean/stddevs, etc. in e.g. in tissues/across subjects

Happy to add. For now we only have degenerate FA voxels in ppm.

@oesteban Would need data to finish this: figure out how scalar maps are provided or how the data would be stored as TSV files from upstream processes (smriprep, dmriprep ?).

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 13 lines in your changes missing coverage. Please review.

Project coverage is 59.52%. Comparing base (fcfb226) to head (b8337fb).
Report is 52 commits behind head on main.

Files with missing lines	Patch %	Lines
nireports/reportlets/nuisance.py	84.93%	5 Missing and 6 partials ⚠️
nireports/interfaces/nuisance.py	92.85%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #118      +/-   ##
==========================================
+ Coverage   57.85%   59.52%   +1.66%     
==========================================
  Files          20       20              
  Lines        2074     2174     +100     
  Branches      365      383      +18     
==========================================
+ Hits         1200     1294      +94     
- Misses        788      789       +1     
- Partials       86       91       +5     

Flag	Coverage Δ
unittests	59.36% <87.50%> (?)

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[jhlegarreta]

Contribution checks failures are unrelated:
https://github.com/nipreps/nireports/actions/runs/9149429918/job/25153033558?pr=118#step:4:145

[jhlegarreta]

@oesteban Adding more customizations to this can be left for separate PRs. Dealing with the kwargs as well (it is uncertain to me how those would be dealt with the interface).

Normal plot

Data contains NaNs (marked as black dots)

Data contains both NaNs (marked as black dots) and off-limit values (marked as gray dots and by the excessive density around the limits -values are clipped, not removed)

[jhlegarreta]

@oesteban I am unsure about the relevance of this now, as I have seen that the group reports that you already have available in mriqc are equivalent to these:
https://mriqc.readthedocs.io/en/latest/reports/group.html#group-reports

So if the latter are generated from nireports, then this PR is unfortunately not all that interesting. If they are not, maybe those capabilities should be transferred to nireports and adopt that style instead of introducing a new one here.

[oesteban]

I think this can come handy at some point, I can't see a reason to pull it back now :)