ls: allow crate users to call ls without having to print everything to stdout (#9851)

* refactor uu_ls so that crate users can call the command without having
the internal print stdout output

* redo changes

* clippy

* help cspell understand dired

* rebase

* try and optimize for memory and speed performance.

update output handling to add streaming mode.

* work on ci issues, optimize uid and gid cache handling, improve dired output calculations

* test fx: change read_dir parameter to mutable reference in collect_directory_entries and enter_directory functions

* update documentation

* more perf tweaks

* fmt

* tweak perf

* Add back (and shorten) comment for 31_556_952

* Update src/uu/ls/src/ls.rs

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

* Update src/uu/ls/src/ls.rs

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

---------

Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>
Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

Author: 3 people

.vscode/cspell.dictionaries/jargon.wordlist.txt

@@ -26,6 +26,7 @@ conv
 cyclomatic
 dedup
 deduplication
+dired
 demangle
 denoland
 deque