Update RenderingOpenXR module to support HTC Vive Generic trackers

Implement OpenXR support for retrieving poses associated with HTC Vive Generic Trackers.

Corresponding OpenXR extension is XR_HTCX_vive_tracker_interaction. See specification

Relevant discussions and issues:

• https://github.com/ValveSoftware/openvr/issues/1769 (XR_HTCX_vive_tracker_interaction rev 3 unsupported paths)
• https://community.khronos.org/t/hardware-tracker-vive-tracker-with-openxr/107424/10 (Hardware Tracker / Vive Tracker with OpenXR)

Related projects:

• https://github.com/cmbruns/pyopenxr_examples/blob/main/xr_examples/vive_tracker.py
• https://github.com/1runeberg/OpenXRProvider_v2/tree/main/sample_extensions/htcx_vive_tracker_interaction
• https://github.com/ValveSoftware/openxr_engine_plugins/tree/main/unreal_engine/ue5/OpenXRViveTracker

For reference, in the context of the OpenVR modules, the support is implemented through these functions:

• vtkOpenVRRenderWindow::UpdateHMDMatrixPose where Open VR poses associated with all tracked devices are retrieved
• vtkOpenVRRenderWindow::GetDeviceHandleForOpenVRHandle
• vtkOpenVRRenderWindow::RenderModels allowing to render models of controller including the generic ones