Adding support for the OpenXR futures extension

modules/openxr/extensions/openxr_htc_controller_extension.h

@@ -33,6 +33,11 @@
 #include "openxr_extension_wrapper.h"
 
 class OpenXRHTCControllerExtension : public OpenXRExtensionWrapper {
+	GDCLASS(OpenXRHTCControllerExtension, OpenXRExtensionWrapper);
+
+protected:
+	static void _bind_methods() {}
+
 public:
 	enum HTCControllers {
 		// Note, HTC Vive Wand controllers are part of the core spec and not part of our extension.