Expand List of FHIR resources

[JRPearson500]

Expand List of FHIR resources that the interaction layer can update in the patient data model

[JRPearson500]

To save the user from writing new patient record entries in raw FHIR format in the Intelligence layer, we have created an internal representation of FHIR resources. These are dictionaries, which can be used when converting the patient record to FHIR.

Currently conversion to / from the following FHIR resources is supported:
○ Patient
○ Encounter
○ Condition
○ Observation
○ Procedure
○ MedicationRequest
○ ServiceRequest
○ Appointment

Within those, only certain fields are converted. This is a simplified version, but more complexity could be added in order to
produce richer FHIR outputs (e.g. including more fields and data) and linking between resources (e.g. link to encounter resource from other related resources).