Function duckdb_log_storage_set_extra_data 

pub unsafe extern "C" fn duckdb_log_storage_set_extra_data(
    log_storage: duckdb_log_storage,
    extra_data: *mut c_void,
    delete_callback: duckdb_delete_callback_t,
)

Sets the extra data of the custom log storage.

@param log_storage The log storage object. @param extra_data The extra data that is passed back into the callbacks. @param delete_callback The delete callback to call on the extra data, if any.