NVTX Python Bindings

NVTX (NVIDIA Tools Extension Library) is a cross-platform API for annotating source code to provide contextual information to developer tools like NVIDIA Nsight Systems. The `nvtx` Python library provides native Python wrappers for a subset of the NVTX C API, enabling Python developers to mark events and define code ranges for profiling and visualization of CPU and GPU activities. The current Python package version is 0.2.15, with active development tied to the broader NVTX v3.x.x core library releases.