perf: utilize smartstring for string handling (#5149)

* perf: utilize smartstring for string handling

- Updated various modules to replace standard String with smartstring::alias::String for improved performance and memory efficiency.
- Adjusted string manipulations and conversions throughout the codebase to ensure compatibility with the new smartstring type.
- Enhanced readability and maintainability by using `.into()` for conversions where applicable.
- Ensured that all instances of string handling in configuration, logging, and network management leverage the benefits of smartstring.

* fix: replace wrap_err with stringify_err for better error handling in UWP tool invocation

* refactor: update import path for StringifyErr and adjust string handling in sysopt

* fix: correct import path for CmdResult in UWP module

* fix: update argument type for execute_sysproxy_command to use std::string::String

* fix: add missing CmdResult import in UWP platform module

* fix: improve string handling and error messaging across multiple files

* style: format code for improved readability and consistency across multiple files

* fix: remove unused file

src-tauri/src/feat/proxy.rs

@@ -66,7 +66,7 @@ pub async fn toggle_tun_mode(not_save_file: Option<bool>) {
 pub async fn copy_clash_env() {
     // 从环境变量获取IP地址，如果没有则从配置中获取 proxy_host，默认为 127.0.0.1
     let clash_verge_rev_ip = match env::var("CLASH_VERGE_REV_IP") {
-        Ok(ip) => ip,
+        Ok(ip) => ip.into(),
         Err(_) => Config::verge()
             .await
             .latest_ref()