Implement Operation $purge on Patient

[alexanderkiel]

• we like to purge all resources in the compartment of a particular Patient
• we need a new transaction command called patient-purge
• we need a new private transaction command called purge that will work similar to delete-history except that it purges also the current version of a resource
• the patient-purge transaction command is expanded into multiple purge transaction commands

Docs: https://github.com/samply/blaze/blob/main/docs/api/operation-patient-purge.md

This issue is part of the Epic: #399