Add wrapping and tests for PhasedArray3DSpecialCoordinatesImage

[dzenanz]

No description provided.

[tbirdso]

Code looks good to me. @dzenanz can you confirm that Python tests pass locally on your system?

It looks like itk::PhaseArray3DSpecialCoordinatesImage is implemented in ITK/Core/Common, could you comment on the decision to add wrapping here in ITKUltrasound? Maybe the wrapping for itk::PhaseArray3DSpecialCoordinatesImage and general filters could be moved there and then the wrapping for ITKUltrasound spectral analysis filters could be kept here? Though I am not sure whether it is worth the effort or not.

[dzenanz]

All the tests pass locally, including the ones this PR adds.

I also though about adding wrapping to ITK/Core/Common, but:

1. this class is somewhat specific to ultrasound
2. releasing a new version of itk-ultrasound is easier and faster than itk, and I need this to continue working on https://github.com/KitwareMedical/SlicerITKUltrasound/tree/pythonization.

Moving the wrapping to ITK core should be easy - just move the .wrap files there. We can discuss with @thewtex whether to do it for ITK 5.4 release.

[tbirdso]

@dzenanz Sounds reasonable to me, thanks for commenting. Good to move forward with changes as-is.

[thewtex]

+1 for migrating this to ITK

[dzenanz]

Migrating to ITK via InsightSoftwareConsortium/ITK#4101.