Refactor error make (#10923)

- Replaced `start`/`end` with span.
- Fixed standard library.
- Add `help` option.
- Add a couple more errors for invalid record types.

Resolve #10914


# Description



# User-Facing Changes

- **BREAKING CHANGE:** `error make` now takes in `span` instead of
`start`/`end`:

  ```Nushell
  error make {
      msg: "Message"
      label: {
          text: "Label text"
          span: (metadata $var).span
      }
  }
  ```
- `error make` now has a `help` argument for custom error help.

crates/nu-std/std/testing.nu

@@ -94,8 +94,7 @@ def throw-error [error: record] {
         msg: $"(ansi red)($error.msg)(ansi reset)"
         label: {
             text: ($error.label)
-            start: $error.span.start
-            end: $error.span.end
+            span: $error.span
         }
     }
 }