generate Pypi/conda packages

[KrisThielemans]

Good example would be the MRD repo, see microsoft/yardl#108 (comment) for some info.

It looks like for MRD, the generated code is added to the repo, presumably via some actions etc. Usually I don't like adding generated code to a repo, but otherwise we probably need 2 different repos (the model, and the generated code). Suggestions welcome!

[lukepolson]

@KrisThielemans it seems like they have a the following actions

1. Create the environment necessary for using yardl: https://github.com/ismrmrd/mrd/blob/main/.github/actions/configure-mrd-build-environment/action.yml
2. Build the source code for cpp/python/matlab using yardl (from their .yml files) https://github.com/ismrmrd/mrd/blob/main/.github/workflows/mrd_build.yml
3. Then some code for (a) publishing to pypi https://github.com/ismrmrd/mrd/blob/main/.github/workflows/mrd_pypi.yml and (b) publishing to conda https://github.com/ismrmrd/mrd/blob/main/.github/workflows/mrd_conda.yml

I'll play around with a forked version of the repository and test-pypi to see if I can get something similar to what they have.