Add mock adapter crate with live system demo

[twitu]

Pull Request

Mock live system demo shows an actor communicating with a websocket and http server to receive two streams of data. It uses nautilus components like DataClient, DataClientAdapter and DataEngine and LiveRunner to demonstrate a realistic PoC for a live system.

Type of change

• Demonstration + test

How has this change been tested?

Runs with expected logs using cargo run --bin network_stream -p nautilus-demo --features python

Received positive value: 3
Received subscribe command
Received negative value: -9
Received get data request
Error sending log event (receiver closed): [DEBUG] hyper_util::client::legacy::pool: reuse idle connection for ("http", 127.0.0.1:40523)
Error sending log event (receiver closed): [DEBUG] hyper_util::client::legacy::pool: pooling idle connection for ("http", 127.0.0.1:40523)
Received positive value: 8
Received custom data response: CustomDataResponse { correlation_id: UUID4('01f1f6bc-e23c-46ac-b8ce-c9a466bad0dc'), client_id: u!("mock_data_client"), venue: u!("http positive stream"), data_type: DataType(type_name=positive_stream, metadata=None), data: Any { .. }, ts_init: UnixNanos(0), params: None }
Received positive value: 8
Received negative value: -10
Received get data request
Error sending log event (receiver closed): [DEBUG] hyper_util::client::legacy::pool: reuse idle connection for ("http", 127.0.0.1:40523)
Error sending log event (receiver closed): [DEBUG] hyper_util::client::legacy::pool: pooling idle connection for ("http", 127.0.0.1:40523)
Received positive value: 9
Received custom data response: CustomDataResponse { correlation_id: UUID4('6a81c56a-5c98-46e8-a834-f49868663137'), client_id: u!("mock_data_client"), venue: u!("http positive stream"), data_type: DataType(type_name=positive_stream, metadata=None), data: Any { .. }, ts_init: UnixNanos(0), params: None }
Received positive value: 9
Received unsubscribe command