feat(rclone.exe): Rewrite rclone

This rewriting is important  because the old version of code can`t use system rclone (if it hed been installed already)

src/rcloneInstall.rs

@@ -4,10 +4,20 @@ use std::process::Command;
 
 pub struct RcloneApp {
     rclone_path: PathBuf,
+    using_system_rclone: bool,
 }
 
 impl RcloneApp {
     pub fn new() -> Result<Self, Box<dyn std::error::Error>> {
+        if let Some(system_rclone) = Self::check_system_rclone() {
+            println!("Найден системный rclone: {:?}", system_rclone);
+            return Ok(Self {
+                rclone_path: system_rclone,
+                using_system_rclone: true,
+            });
+        }
+        println!("Системный rclone не найден, использую встроенную версию");
+
         let app_dir = dirs::data_dir()
             .ok_or("Не удалось найти папку для данных")?
             .join("rclone-ui");
@@ -23,7 +33,25 @@ impl RcloneApp {
             Self::extract_rclone(&rclone_path)?;
         }
 
-        Ok(Self { rclone_path })
+        Ok(Self {
+            rclone_path,
+            using_system_rclone: false,
+        })
+    }
+
+    fn check_system_rclone() -> Option<PathBuf> {
+        if let Ok(path) = which::which("rclone") {
+            return Some(path);
+        }
+
+        #[cfg(windows)]
+        {
+            if let Ok(path) = which::which("rclone.exe") {
+                return Some(path);
+            }
+        }
+
+        None
     }
 
     fn extract_rclone(dest_path: &PathBuf) -> Result<(), Box<dyn std::error::Error>> {
@@ -45,7 +73,7 @@ impl RcloneApp {
         {
             use std::os::unix::fs::PermissionsExt;
             let mut perms = fs::metadata(dest_path)?.permissions();
-            perms.set_mode(0o755); // rwxr-xr-x
+            perms.set_mode(0o755);
             fs::set_permissions(dest_path, perms)?;
         }
 
@@ -53,13 +81,7 @@ impl RcloneApp {
         Ok(())
     }
 
-    pub fn run_command(&self, args: &[&str]) -> Result<String, String> {
-        println!(
-            "Запускаю: {} {}",
-            self.rclone_path.display(),
-            args.join(" ")
-        );
-
+    fn run_command(&self, args: &[&str]) -> Result<String, String> {
         let output = Command::new(&self.rclone_path)
             .args(args)
             .output()