Rework patient assignment API endpoints [MPIAPI]

[ericbuckley]

Summary

Copy the existing two assign patient API endpoints to use new urls on the /person namespace

Details / Tasks

POST /patient/<patient_reference_id>/person -> POST /person
Copy the functionality of assigning a patient (or list of patients) to a new person cluster using POST /person, this endpoint should accept a list of patient reference ids (eg '{"patients": ["<patient-reference-id>"]}')

PATCH /patient/<patient_reference_id>/person -> PATCH /person/<person-reference-id>
Copy the functionality of assigning a patient (or list of patients) to an existing person cluster using PATCH /person/<person-reference-id>, this endpoint should accept a list of patient reference ids (eg '{"patients": ["<patient-reference-id>"]}')

In the API docs, mark the existing /patient/X/person endpoints as "DEPRECATED".

NOTE: At this time, do not delete the existing /patient endpoints that we are copying, although they will be deleted in the future.

Related Issues/PRs

#155

Notes / Comments

This work will complete use cases 1, 2, 3 and 6 specified in #155