feat(rm): add progress bar support to recursive dir removal on Linux

Refactor `safe_remove_dir_recursive_impl` to accept an optional `ProgressBar` parameter instead of `dir_fd`, opening the directory internally. Add progress increments for each removed item to improve user feedback during long recursive operations.

Author: mattsu2020

src/uu/rm/src/platform/linux.rs

@@ -342,7 +342,11 @@ pub fn safe_remove_dir_recursive(
     }
 }
 
-pub fn safe_remove_dir_recursive_impl(path: &Path, dir_fd: &DirFd, options: &Options) -> bool {
+pub fn safe_remove_dir_recursive_impl(
+    path: &Path,
+    options: &Options,
+    progress_bar: Option<&ProgressBar>,
+) -> bool {
     // Read directory entries using safe traversal
     let dir_fd = match DirFd::open(path) {
         Ok(fd) => fd,
@@ -412,6 +416,9 @@ pub fn safe_remove_dir_recursive_impl(path: &Path, dir_fd: &DirFd, options: &Opt
             if !child_error {
                 match DirFd::open(path) {
                     Ok(fd) => {
+                        if let Some(pb) = progress_bar {
+                            pb.inc(1);
+                        }
                         error = handle_unlink(&fd, entry_name.as_ref(), &entry_path, true, options)
                             || error
                     }
@@ -424,6 +431,9 @@ pub fn safe_remove_dir_recursive_impl(path: &Path, dir_fd: &DirFd, options: &Opt
             if prompt_file_with_stat(&entry_path, &entry_stat, options) {
                 match DirFd::open(path) {
                     Ok(fd) => {
+                        if let Some(pb) = progress_bar {
+                            pb.inc(1);
+                        }
                         error = handle_unlink(&fd, entry_name.as_ref(), &entry_path, false, options)
                             || error
                     }