feat: Optimize some codes (ksud) (#465)

* chore: make cargo clippy happy

Signed-off-by: Tools-app <localhost.hutao@gmail.com>

* chore: Optimize import
-  Format as a standard import

Signed-off-by: Tools-app <localhost.hutao@gmail.com>

---------

Signed-off-by: Tools-app <localhost.hutao@gmail.com>

userspace/ksud/src/uid_scanner.rs

@@ -1,16 +1,17 @@
-use anyhow::Result;
-use log::{info, warn};
 use std::{
     fs,
     io::Write,
     os::unix::{
-        fs::{symlink, PermissionsExt},
+        fs::{PermissionsExt, symlink},
         process::CommandExt,
     },
     path::Path,
     process::{Command, Stdio},
 };
 
+use anyhow::Result;
+use log::{info, warn};
+
 pub fn start_uid_scanner_daemon() -> Result<()> {
     const SCANNER_PATH: &str = "/data/adb/uid_scanner";
     const LINK_DIR: &str = "/data/adb/ksu/bin";