chore: import upstream snapshot with attribution

examples/tutorials/flow-deploy/create-service-with-flow/echo_connection_flow/echo_connection.py

@@ -0,0 +1,11 @@
+from promptflow.core import tool
+from promptflow.connections import AzureOpenAIConnection
+
+
+@tool
+def echo_connection(flow_input: str, node_input: str, connection: AzureOpenAIConnection):
+    print(f"Flow input: {flow_input}")
+    print(f"Node input: {node_input}")
+    print(f"Flow connection: {connection._to_dict()}")
+    # get from env var
+    return {"value": flow_input}

examples/tutorials/flow-deploy/create-service-with-flow/echo_connection_flow/flow.dag.yaml

@@ -0,0 +1,18 @@
+$schema: https://azuremlschemas.azureedge.net/promptflow/latest/Flow.schema.json
+inputs:
+  flow_input:
+    type: string
+outputs:
+  output:
+    type: object
+    reference: ${echo_connection.output}
+nodes:
+- name: echo_connection
+  type: python
+  source:
+    type: code
+    path: echo_connection.py
+  inputs:
+    flow_input: ${inputs.flow_input}
+    node_input: "dummy_node_input"
+    connection: open_ai_connection