feat(rclone.exe): Function new()

This function first of all created app object by
1) Defining the application directory
2) Creating dirs if they are not exists
3) Defining ways for rclone by yours os
4) Define rclone or install it

src/rcloneInstall.rs

@@ -1,6 +1,28 @@
+use std::fs;
+use std::path::PathBuf;
+use std::process::Command;
+
 pub struct RcloneApp {
     rclone_path: PathBuf,
 }
 
 impl RcloneApp {
+    pub fn new() -> Result<Self, Box<dyn std::error::Error>> {
+        let app_dir = dirs::data_dir()
+            .ok_or("Не удалось найти папку для данных")?
+            .join("rclone-ui");
+
+        fs::create_dir_all(&app_dir)?;
+        let rclone_path = if cfg!(windows) {
+            app_dir.join("rclone.exe")
+        } else {
+            app_dir.join("rclone")
+        };
+
+        if !rclone_path.exists() {
+            Self::extract_rclone(&rclone_path)?;
+        }
+
+        Ok(Self { rclone_path })
+    }
 }