add dhs-testing stubs

server/routers/dhs-testing/json/records-data/records.json

@@ -0,0 +1,13 @@
+{ 
+"dates":
+[
+    { "date": "2024-01-06T18:00:00"},
+    { "date": "2024-01-05T16:00:00"},
+    { "date": "2024-01-07T12:00:00"}
+],
+
+    "specialists":
+    [{"name": "Петрова Анна"},
+    {"name": "Сидорова Елена"},
+    {"name": "Иванов Олег"}]
+}