LS support for other number formatting (#2650)

* make sort-by fail gracefully if mismatched types are compared

* Added a test to check if sorted-by with invalid types exists gracefully

* Linter changes

* removed redundant pattern matching

* Changed the error message

* Added a comma after every argument

* Changed the test to accomodate the new err messages

* Err message for sort-by invalid types now shows the mismatched types

* Lints problems

* Changed unwrap to expect

* Added the -f flag to rm command

Now when you a use rm -f there will be no error message, even if the
file doesnt actually exist

* Lint problems

* Fixed the wrong line

* Removed println

* Spelling mistake

* Fix problems when you mv a file into itself

* Lint mistakes

* Remove unecessary filtering in most cases

* Allow the removal of sockets

* Conditional compilations to systems without socket

* Add a size-format option to ls command

* Added kib and mib formating

* Make patterns lowercase

* New subcommand to format, filesize

* Forgot the linter once more

* Remove the ls changes since its no longer needed

* CI mistakes

* Lint stuff

* Fix lint

* Added formatting for bytes

* fix lint

* Changed the usage comment

crates/nu-cli/tests/commands/format.rs

@@ -1,3 +1,5 @@
+use nu_test_support::fs::Stub::EmptyFile;
+use nu_test_support::playground::Playground;
 use nu_test_support::{nu, pipeline};
 
 #[test]
@@ -42,3 +44,26 @@ fn can_use_variables() {
 
     assert_eq!(actual.out, "nu is a new type of shell");
 }
+
+#[test]
+fn format_filesize_works() {
+    Playground::setup("format_filesize_test_1", |dirs, sandbox| {
+        sandbox.with_files(vec![
+            EmptyFile("yehuda.txt"),
+            EmptyFile("jonathan.txt"),
+            EmptyFile("andres.txt"),
+        ]);
+
+        let actual = nu!(
+            cwd: dirs.test(), pipeline(
+            r#"
+                ls
+                | format filesize size KB
+                | get size
+                | first
+            "#
+        ));
+
+        assert_eq!(actual.out, "0.01 KB");
+    })
+}