[api] Add details about GP IS

examples/qoc_indicatorset.1.json

@@ -2,6 +2,10 @@
 	"key": "ZOO-dm",
 	"name": "Diabetes Mellitus type 2",
 	"refDate": "2023-07-01",
+	"gpis": {
+		"gpisType": "HealthConnected",
+		"timestamp": "2023-06-29T14:45:00.000Z"
+	},
 	"calculating": 1,
 	"chapters": [
 		{

schemas/GPIS.yaml

@@ -0,0 +1,13 @@
+description: The source of the medical data used to produce this report (which General Practitioner Information System used, and when the data was provided).
+type: object
+properties:
+  gpisType:
+    description: The type of GP Information System
+    type: string
+  timestamp:
+    description: |-
+      The report is based on dossier data as it was on this timestamp; due to inaccuracies by GP information systems that source the data,
+      this value is not always accurate and can be off by as much as a week.
+    type: string
+    format: dateTime
+    example: 2023-04-01T12:30:00.000Z

schemas/IndicatorSet.yaml

@@ -2,6 +2,8 @@ description: |-
   A report about a care program based on showing a number of ratios, such as 'how many people in your practice have diabetes', or 'for all diabetes patients in your care with a recent blood pressure measurement, how do these blood pressure measurements split into "problematic" / "concern" / "okay" categories
 type: object
 properties:
+  gpis:
+    $ref: 'GPIS.yaml'
   key:
     description: Unique identifier, not to be shown to the user, for referring to this indicator set in other API calls
     type: string