vr: add OpenXR headset output, VR tracker and VR controller input behind --vr (#1726)

src/graphics/presentation/presenter.h

@@ -27,7 +27,7 @@ public:
 	KYTY_CLASS_NO_COPY(Presenter);
 
 	[[nodiscard]] Frame&         PrepareFrame(CommandBuffer& command, const ImageInfo& info,
-	                                         bool hdr = false);
+	                                          bool hdr = false, bool headset = false);
 	[[nodiscard]] Frame&         PrepareBlankFrame(uint32_t width, uint32_t height, bool opaque,
 	                                               CommandBuffer* producer = nullptr);
 	[[nodiscard]] bool           PresentLastFrame();