System Orchestration and Control

Implement the main event loop to drive the flow of data, strategy evaluation, and execution.

Create a main `Framework` class to initialize and connect all components based on the configuration file.

Implement a "paper trading" mode that simulates order fills without sending them to the broker.

Develop a command-line interface (CLI) to start, stop, and monitor the trading system's status.

Implement a graceful shutdown procedure to manage pending orders and open positions safely upon exit.