[ENH] Update registration subworkflows and modules

[AlexVCaron]

Continuation of #25

Type of improvement

• Documentation
• Development tools (e.g. linter, formatter, etc.)
• Development container
• Global update (please specify)
• Other (please specify)

Describe your improvement

subworkflow/registration:

• add synthregistration optionality to subworkflow
• add specific test for synthregistration

modules/synthregistration:

• change output structure to tuple transfo_image containing both transforms
• add python package access.

module/convert:

• add optionality to affine conversion. If no affine is provided, skips conversion. Synthmorph output include affine initialization in its deform output.
• change output order

Checklist before requesting a review

• Ensure the syntax is correct (EditorConfig and Prettier must pass)
• Run the test suites if your changes affect any module
• Regenerate the Poetry lock file if you have updated the dependencies
• Ensure the documentation is up-to-date

[arnaudbore]

Quick questions and GTG !

[arnaudbore]

don't need it here.

[arnaudbore]

why do you have different soft and versions here ? Generic way of getting the version also.

[AlexVCaron]

Not for synthmorph yet, no mechanism in the container sadly. I aligned both versions for now

[AlexVCaron]

Let's wait a bit. I found an inconsistency with the last two conditions in the subworkflow. There should not be a check on ch_metric directly, it's bound to fail as we said. I rewrote the section so it's channels doing the job of selecting either anatotodwi or the classical ants SyN script. In test, I will push shortly