Function init 

pub fn init(
    log_level_from_settings: &str,
    log_file_path: Option<&Path>,
) -> Result<()>

Initialise the program logger using the fern logging library with colourised output.

The user can specify their preferred logging level via the settings.toml file (defaulting to info if not present) or with the MUSE2_LOG_LEVEL environment variable. If both are provided, the environment variable takes precedence.

Possible log level options are:

• error
• warn
• info
• debug
• trace

Arguments

• log_level_from_settings: The log level specified in settings.toml
• log_file_path: The location to save log files (if Some, log files will be created)