Add neo4j vector memory template (#12993)

templates/neo4j-vector-memory/main.py

@@ -0,0 +1,17 @@
+from neo4j_vector_memory.chain import chain
+
+if __name__ == "__main__":
+    user_id = "user_id_1"
+    session_id = "session_id_1"
+    original_query = "What is the plot of the Dune?"
+    print(
+        chain.invoke(
+            {"question": original_query, "user_id": user_id, "session_id": session_id}
+        )
+    )
+    follow_up_query = "Tell me more about Leto"
+    print(
+        chain.invoke(
+            {"question": follow_up_query, "user_id": user_id, "session_id": session_id}
+        )
+    )