ENH: Update DICOMUtils loadPatient API to handle messages and progressCallback

[jcfr]

Originally posted by @lassoan in #7270 (review)

[...] I agree that it can be useful to expose messages and progressCallback arguments at higher-level functions, too. I would prefer to explicitly specify these arguments, as it would make the API more clear (and 2 extra arguments are not too many and I don't expect that loadLoadables will have many new options in the future).

cc: @marcus-wirtz-snkeos

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This pull request was created to include the changes originally included through this pull-requests:

• ENH: Propagate args / kwargs to loadLoadables | ⚠️ Changes removed from main #7270

For the sake of having a clean history and considering the updated main branch has not been referenced externally, main was forced push to b050d39

[jcfr]

@lassoan @jamesobutler @pieper Since this change was already approved in the original pull request, review should be straightforward. 🙏