Moving from `pynvml` to `nvidia-ml-py`

[jakirkham]

Currently this is making use of pynvml in a few places:

rapids-examples/dask-metrics/dask_metrics/monitor.py

Line 14 in bedd00f

import pynvml

rapids-examples/dask-metrics/README.md

Line 189 in bedd00f

return pynvml.nvmlDeviceGetPowerUsage(handle)

However we would like to move to nvidia-ml-py in the future. Raising this issue to track this work