ListStream touchup (#12524)

# Description

Does some misc changes to `ListStream`:
- Moves it into its own module/file separate from `RawStream`.
- `ListStream`s now have an associated `Span`.
- This required changes to `ListStreamInfo` in `nu-plugin`. Note sure if
this is a breaking change for the plugin protocol.
- Hides the internals of `ListStream` but also adds a few more methods.
- This includes two functions to more easily alter a stream (these take
a `ListStream` and return a `ListStream` instead of having to go through
the whole `into_pipeline_data(..)` route).
  -  `map`: takes a `FnMut(Value) -> Value`
  - `modify`: takes a function to modify the inner stream.

crates/nu-cli/src/commands/history/history_.rs

@@ -107,7 +107,7 @@ impl Command for History {
                             file: history_path.display().to_string(),
                             span: head,
                         })?
-                        .into_pipeline_data(ctrlc)),
+                        .into_pipeline_data(head, ctrlc)),
                     HistoryFileFormat::Sqlite => Ok(history_reader
                         .and_then(|h| {
                             h.search(SearchQuery::everything(SearchDirection::Forward, None))
@@ -122,7 +122,7 @@ impl Command for History {
                             file: history_path.display().to_string(),
                             span: head,
                         })?
-                        .into_pipeline_data(ctrlc)),
+                        .into_pipeline_data(head, ctrlc)),
                 }
             }
         } else {