chore: reorg use

src/cmd_piv.rs

@@ -1,15 +1,16 @@
 use std::time::Duration;
-use pem::Pem;
-use sha2::Sha256;
-use digest::Digest;
+
 use chrono::Local;
-use clap::{ArgMatches, SubCommand, App, Arg};
-use yubikey::{YubiKey, Certificate};
-use yubikey::piv::SlotId;
-use x509_parser::parse_x509_certificate;
-use rust_util::XResult;
-use rust_util::util_msg::MessageType;
+use clap::{App, Arg, ArgMatches, SubCommand};
+use digest::Digest;
+use pem::Pem;
 use rust_util::util_clap::{Command, CommandError};
+use rust_util::util_msg::MessageType;
+use rust_util::XResult;
+use sha2::Sha256;
+use x509_parser::parse_x509_certificate;
+use yubikey::{Certificate, YubiKey};
+use yubikey::piv::SlotId;
 
 pub struct CommandImpl;