[Feature Request]: DICOM IO `delete`

### What would you like to happen?

The DICOM IO (Java SDK) currently supports retrieving metadata. We should extend the functionality to allow it to delete a study using `projects.locations.datasets.dicomStores.studies.delete`, called on the Healthcare Client, under the hood.

This is part of a larger effort to match functionalities in our client libraries (https://cloud.google.com/healthcare-api/docs/how-tos/dicomweb#healthcare-delete-dicomweb-java), with capabilities in this IO.

### Issue Priority

Priority: 3 (nice-to-have improvement)

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