Run a backtesting simulation with the provided configuration.
Args: backtesting_config: Configuration for the backtesting including start/end time, resolution, trade cost, and controller config
Returns: Dictionary containing executors, processed data, and results from the backtest
Raises: Returns error dictionary if backtesting fails
Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.
Successful Response