OptiX Toolkit Debugging Utilities

This feature thread tracks the evolution of debugging utilities for NVIDIA's OptiX ray tracing engine. Initial efforts focused on providing robust error-checking macros and device-side debug printing mechanisms to address common debugging challenges in GPU ray tracing. This includes unified, minimal-macro error checking across OptiX, CUDA runtime, and CUDA driver APIs, as well as targeted, interactive device-side debug output with features like debug index matching and visual markers.