Port ListDetailsView from 7.x

**Source**: Microsoft.Toolkit.Uwp.UI.Controls (7.x)
**Destination**: TBD (not yet determined)

## Description

Presents items in a list/details pattern. Renamed to ListDetailsView in 7x.

## Prerequisites

None identified.

## Porting Basics

- [ ] Namespace updated to `CommunityToolkit.WinUI.*`
- [ ] Code for UWP, WinUI3 and Uno Platform consolidated
- [ ] Desired MultiTargets configured
- [ ] Sample code migrated
- [ ] Concept docs migrated
- [ ] Tests migrated and passing

## Quality Evaluation

See [Porting Criteria](https://github.com/CommunityToolkit/Windows/wiki/Component-Quality-Evaluation) for detailed evaluation guidance.

- [ ] UX: Accessibility reviewed
- [ ] UX: Visual design reviewed
- [ ] UX: Interaction patterns appropriate
- [ ] DX: API surface reviewed
- [ ] DX: API flexibility appropriate
- [ ] DX: Documentation updated
- [ ] MX: Breaking changes documented
- [ ] MX: Domain isolation appropriate
- [ ] MX: Test coverage adequate

## Tracking Gaps

*No gaps identified — porting work not yet started.*

## Closing

- [ ] All Porting Basics complete
- [ ] Quality Evaluation reviewed
- [ ] Gaps filed as sub-issues

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## 7x Documentation Inventory

**Docs ported to 8x**: n/a

**Docs not in 8x**: All sections

## 7x Source Inventory

**Source already ported to 8x**: n/a

**Source not ported to 8x**: All

## Notes

- Not currently planned for porting. Open to community interest.
- **Archive redirect**: https://learn.microsoft.com/en-us/dotnet/communitytoolkit/windows/archive/listdetailsview

Comienza revisando la documentación archivada de ListDetailsView y los Porting Criteria enlazados; después, determina el destino, ya que el issue lo deja como TBD. El trabajo estará completo cuando se hayan abordado los aspectos básicos de portabilidad indicados, la evaluación de calidad, la documentación, las pruebas y las comprobaciones finales, y cualquier carencia se haya registrado como sub-issue.

Escrito por el modelo de indexación a partir del texto del issue.