Function setup_logger 

pub fn setup_logger()

Sets up the logger for the application.

The logger level is determined by the DERIBIT_LOG_LEVEL environment variable. If the variable is not set, it defaults to INFO.

This function can be called multiple times safely - it will only initialize the logger on the first call.

Example

use deribit_fix::utils::setup_logger;

fn main() {
    setup_logger();
    // Application code here
}