add sftp with key authentication service

src/main.rs

@@ -633,12 +633,7 @@ async fn setup(docker: &Docker, options: CloudOptions, config: &HazeConfig) -> R
         for service in cloud.services() {
             for cmd in service.post_setup(docker, &cloud.id, config).await? {
                 cloud
-                    .exec(
-                        docker,
-                        shell_words::split(&cmd).into_diagnostic()?,
-                        false,
-                        Vec::<String>::default(),
-                    )
+                    .exec(docker, cmd, false, Vec::<String>::default())
                     .await?;
             }
         }