Add Healthcareapis CLI settings (Azure#19046)

Author: wangzelin007

specification/healthcareapis/resource-manager/readme.az.md

@@ -0,0 +1,46 @@
+# AZ
+
+These settings apply only when `--az` is specified on the command line.
+
+``` yaml $(az)
+az:
+    extensions: healthcareapis
+    namespace: azure.mgmt.healthcareapis
+    package-name: azure-mgmt-healthcareapis
+az-output-folder: $(azure-cli-extension-folder)/src/healthcareapis
+python-sdk-output-folder: "$(az-output-folder)/azext_healthcareapis/vendored_sdks/healthcareapis"
+# add additional configuration here specific for Azure CLI
+# refer to the faq.md for more details
+extension-mode: stable
+
+# rename command groups
+directive:
+    - where:
+          group: healthcareapis workspace-private-endpoint-connection
+      set:
+          group: healthcareapis workspace private-endpoint-connection
+    - where:
+          group: healthcareapis workspace-private-link-resource
+      set: 
+          group: healthcareapis workspace private-link-resource
+    - where:
+          group: healthcareapis dicom-service
+      set: 
+          group: healthcareapis workspace dicom-service
+    - where:
+          group: healthcareapis fhir-service
+      set: 
+          group: healthcareapis workspace fhir-service
+    - where:
+          group: healthcareapis iot-connector
+      set: 
+          group: healthcareapis workspace iot-connector
+    - where:
+          group: healthcareapis iot-connector-fhir-destination
+      set: 
+          group: healthcareapis workspace iot-connector fhir-destination
+    - where:
+          group: healthcareapis fhir-destination
+      set: 
+          group: healthcareapis workspace iot-connector fhir-destination
+```