[Eng 387] feat : add encounter minimal spec to medication dispense (#3663)

feat:added encounter base spec

Author: nandkishorr

care/emr/resources/medication/dispense/spec.py

@@ -12,6 +12,7 @@
 from care.emr.models.medication_request import MedicationRequest
 from care.emr.resources.base import EMRResource
 from care.emr.resources.charge_item.spec import ChargeItemReadSpec
+from care.emr.resources.encounter.spec import EncounterSpecBase
 from care.emr.resources.inventory.inventory_item.spec import InventoryItemReadSpec
 from care.emr.resources.location.spec import FacilityLocationListSpec
 from care.emr.resources.medication.dispense.dispense_order import (
@@ -235,4 +236,9 @@ def perform_extra_serialization(cls, mapping, obj):
 
 
 class MedicationDispenseRetrieveSpec(MedicationDispenseReadSpec):
-    pass
+    encounter: dict
+
+    @classmethod
+    def perform_extra_serialization(cls, mapping, obj):
+        super().perform_extra_serialization(mapping, obj)
+        mapping["encounter"] = EncounterSpecBase.serialize(obj.encounter).to_json()