Draft of Python API for NVBench

The prototype is based on pybind11 to minimize boiler-plate
code needed to deal with move-only semantics of many nvbench
classes.

python/cuda/nvbench/__init__.py

@@ -0,0 +1,18 @@
+import importlib.metadata
+
+from cuda.bindings.path_finder import (  # type: ignore[import-not-found]
+    _load_nvidia_dynamic_library,
+)
+
+try:
+    __version__ = importlib.metadata.version("pynvbench")
+except Exception:
+    __version__ = "0.0.0dev"
+
+for libname in ("cupti", "nvperf_target", "nvperf_host"):
+    _load_nvidia_dynamic_library(libname)
+
+from ._nvbench import *  # noqa: E402, F403
+from ._nvbench import register, run_all_benchmarks  # noqa: E402
+
+__all__ = ["register", "run_all_benchmarks"]