chore: reorg use

src/fido.rs

@@ -1,11 +1,12 @@
 use std::fmt;
-use std::thread;
 use std::sync::mpsc::{channel, Sender};
-use rand::Rng;
-use serde::{Deserialize, Serialize};
-use authenticator::{StatusUpdate, RegisterResult};
+use std::thread;
+
+use authenticator::{RegisterResult, StatusUpdate};
 use base64::URL_SAFE_NO_PAD;
+use rand::Rng;
 use rust_util::XResult;
+use serde::{Deserialize, Serialize};
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct U2FDeviceInfo {