Support redirect stderr and stdout+stderr with a pipe (#11708)

# Description
Close: #9673
Close: #8277
Close: #10944

This pr introduces the following syntax:
1. `e>|`, pipe stderr to next command. Example: `$env.FOO=bar nu
--testbin echo_env_stderr FOO e>| str length`
2. `o+e>|` and `e+o>|`, pipe both stdout and stderr to next command,
example: `$env.FOO=bar nu --testbin echo_env_mixed out-err FOO FOO e+o>|
str length`

Note: it only works for external commands. ~There is no different for
internal commands, that is, the following three commands do the same
things:~ Edit: it raises errors if we want to pipes for internal
commands
``` 
❯ ls e>| str length
Error:   × `e>|` only works with external streams
   ╭─[entry #1:1:1]
 1 │ ls e>| str length
   ·    ─┬─
   ·     ╰── `e>|` only works on external streams
   ╰────

❯ ls e+o>| str length
Error:   × `o+e>|` only works with external streams
   ╭─[entry #2:1:1]
 1 │ ls e+o>| str length
   ·    ──┬──
   ·      ╰── `o+e>|` only works on external streams
   ╰────
```

This can help us to avoid some strange issues like the following:

`$env.FOO=bar (nu --testbin echo_env_stderr FOO) e>| str length`

Which is hard to understand and hard to explain to users.

# User-Facing Changes
Nan

# Tests + Formatting
To be done

# After Submitting
Maybe update documentation about these syntax.

tests/shell/pipeline/commands/external.rs

@@ -142,6 +142,22 @@ fn command_substitution_wont_output_extra_newline() {
     assert_eq!(actual.out, "bar");
 }
 
+#[test]
+fn basic_err_pipe_works() {
+    let actual = nu!(r#"with-env [FOO "bar"] { nu --testbin echo_env_stderr FOO e>| str length }"#);
+    // there is a `newline` output from nu --testbin
+    assert_eq!(actual.out, "4");
+}
+
+#[test]
+fn basic_outerr_pipe_works() {
+    let actual = nu!(
+        r#"with-env [FOO "bar"] { nu --testbin echo_env_mixed out-err FOO FOO o+e>| str length }"#
+    );
+    // there is a `newline` output from nu --testbin
+    assert_eq!(actual.out, "8");
+}
+
 mod it_evaluation {
     use super::nu;
     use nu_test_support::fs::Stub::{EmptyFile, FileWithContent, FileWithContentToBeTrimmed};

tests/shell/pipeline/commands/internal.rs

@@ -1113,6 +1113,18 @@ fn pipe_input_to_print() {
     assert!(actual.err.is_empty());
 }
 
+#[test]
+fn err_pipe_input_to_print() {
+    let actual = nu!(r#""foo" e>| print"#);
+    assert!(actual.err.contains("only works on external streams"));
+}
+
+#[test]
+fn outerr_pipe_input_to_print() {
+    let actual = nu!(r#""foo" o+e>| print"#);
+    assert!(actual.err.contains("only works on external streams"));
+}
+
 #[test]
 fn command_not_found_error_shows_not_found_2() {
     let actual = nu!(r#"