refactor: progress bar

Pull out display code into different functions

Experimented with printing the actual directory currently being parsed
but this resulted into too many flickering hard to follow prints. It's
cleaner to just print the target directory rather than the directory
currently being examined by the dir_walker.

src/dir_walker.rs

@@ -40,6 +40,7 @@ pub fn walk_it(dirs: HashSet<PathBuf>, walk_data: WalkData) -> Vec<Node> {
             let node = walk(d, &walk_data, 0)?;
 
             prog_data.state.store(Operation::PREPARING, ORDERING);
+
             clean_inodes(node, &mut inodes, walk_data.use_apparent_size)
         })
         .collect();
@@ -125,7 +126,6 @@ fn ignore_file(entry: &DirEntry, walk_data: &WalkData) -> bool {
 
 fn walk(dir: PathBuf, walk_data: &WalkData, depth: usize) -> Option<Node> {
     let prog_data = &walk_data.progress_data;
-
     let mut children = vec![];
 
     if let Ok(entries) = fs::read_dir(&dir) {