debugger: Process ANSI color escape codes in console (#32817)

- [x] foreground highlights
- [x] background highlights
- [x] advertise support in DAP capabilities

Closes #31372

Release Notes:

- Debugger Beta: added basic support for highlighting in the console
based on ANSI escape codes.

crates/editor/src/test/editor_test_context.rs

@@ -510,10 +510,9 @@ impl EditorTestContext {
             editor
                 .background_highlights
                 .get(&TypeId::of::<Tag>())
-                .map(|h| h.1.clone())
-                .unwrap_or_default()
-                .iter()
-                .map(|range| range.to_offset(&snapshot.buffer_snapshot))
+                .into_iter()
+                .flat_map(|highlights| highlights.as_slice())
+                .map(|highlight| highlight.range.to_offset(&snapshot.buffer_snapshot))
                 .collect()
         });
         assert_set_eq!(actual_ranges, expected_ranges);
@@ -525,7 +524,12 @@ impl EditorTestContext {
         let snapshot = self.update_editor(|editor, window, cx| editor.snapshot(window, cx));
         let actual_ranges: Vec<Range<usize>> = snapshot
             .text_highlight_ranges::<Tag>()
-            .map(|ranges| ranges.as_ref().clone().1)
+            .map(|ranges| {
+                ranges
+                    .iter()
+                    .map(|(range, _)| range.clone())
+                    .collect::<Vec<_>>()
+            })
             .unwrap_or_default()
             .into_iter()
             .map(|range| range.to_offset(&snapshot.buffer_snapshot))