added entities.json from test for metamodel

Signed-off-by: sachintendulkar576123 <[email protected]>

tests/entities.json

@@ -0,0 +1,17 @@
+{
+  "type": "retrieval",
+  "attributes": [
+    [
+      {
+        "_comment": "vector store name and type",
+        "attribute": "name",
+        "accessor": "lambda instance,args: type(instance.vectorstore).__name__"
+      },
+      {
+        "attribute": "type",
+        "accessor": "lambda instance,args: 'vectorstore.'+type(instance.vectorstore).__name__"
+      }
+    ]
+
+  ]
+}