Add rest and ignore-rest patterns (#8681)

# Description

Adds two more patterns when working with lists:

```
[1, ..$remainder]
```
and
```
[1, ..]
```
The first one collects the remaining items and assigns them into the
variable. The second one ignores any remaining values.

# User-Facing Changes

Adds more capability to list pattern matching.

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- crates/nu-utils/standard_library/tests.nu` to run the
tests for the standard library

> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.

crates/nu-command/tests/commands/match_.rs

@@ -55,6 +55,28 @@ fn match_list() {
     assert_eq!(actual.out, "double: 1 2");
 }
 
+#[test]
+fn match_list_rest_ignore() {
+    let actual = nu!(
+        cwd: ".",
+        r#"match [1, 2] { [$a, ..] => { print $"single: ($a)" }, [$b, $c] => {print $"double: ($b) ($c)"}}"#
+    );
+    // Make sure we don't see any of these values in the output
+    // As we do not auto-print loops anymore
+    assert_eq!(actual.out, "single: 1");
+}
+
+#[test]
+fn match_list_rest() {
+    let actual = nu!(
+        cwd: ".",
+        r#"match [1, 2, 3] { [$a, ..$remainder] => { print $"single: ($a) ($remainder | math sum)" }, [$b, $c] => {print $"double: ($b) ($c)"}}"#
+    );
+    // Make sure we don't see any of these values in the output
+    // As we do not auto-print loops anymore
+    assert_eq!(actual.out, "single: 1 5");
+}
+
 #[test]
 fn match_constant_1() {
     let actual = nu!(