VTK: Rendering/OpenXR -> VR Relation

| VTK 9.3.1

### OpenXR → VR Relation

File in Rendering/OpenXR | Includes file in Rendering/VR
--- | ---
vtkOpenXRCamera.h | vtkVRHMDCamera.h
vtkOpenXRControlsHelper.h | vtkVRControlsHelper.h
vtkOpenXRInteractorStyle.h | vtkVRInteractorStyle.h
vtkOpenXRModel.h | vtkVRModel.h
vtkOpenXRRenderer.h | vtkVRRenderer.h
vtkOpenXRRenderWindow.h | vtkVRRenderWindow.h
vtkOpenXRRenderWindowInteractor.h | vtkVRRenderWindowInteractor.h