Function safe_app::ffi::logging::app_init_logging

#[no_mangle]
pub unsafe extern "C" fn app_init_logging(
    output_file_name_override: *const c_char, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(_: *mut c_void, _: FfiResult)
)

This function should be called to enable logging to a file. If output_file_name_override is provided, then this path will be used for the log output file.

Callback parameters: user data, error code