KataGo ONNX Runtime backend (OpenVINO EP) for Intel GPU — v2

Prebuilt katago.exe with ONNX Runtime + OpenVINO 2026.2.1 execution provider.

~20% faster than v1 on transformer models due to a graph-pattern fix that enables OpenVINO RMSNorm kernel fusion (numStreams=2, 10 threads, 800 visits, 347.49 visits/s -> 416.52 visits/s).

Includes:

• katago.exe (64-bit, ONNX backend)
• OpenVINO 2026.2.1 runtime DLLs
• ONNX Runtime 1.29.0 DLLs
• gpu_optimized.cfg — preconfigured for Intel GPU with recommended settings