Add extra requires for cuda/cudnn DLLs to onnxruntime-gpu python package

[tianleiwu]

Description

Add extra requires for cuda/cudnn DLLs to onnxruntime-gpu python package.

Example to install extra DLLs from wheel:

[ build/Release/dist ]$ pip install onnxruntime_gpu-1.21.0-cp310-cp310-linux_x86_64.whl[cuda] --force-reinstall

The result is like the following:
Successfully installed coloredlogs-15.0.1 flatbuffers-25.2.10 humanfriendly-10.0 mpmath-1.3.0 numpy-2.2.2 nvidia-cublas-cu12-12.8.3.14 nvidia-cuda-runtime-cu12-12.8.57 nvidia-cudnn-cu12-9.7.1.26 nvidia-cufft-cu12-11.3.3.41 nvidia-nvjitlink-cu12-12.8.61 onnxruntime-gpu-1.21.0 packaging-24.2 protobuf-5.29.3 sympy-1.13.3

Example section in METADATA file of dist-info:

Provides-Extra: cuda
Requires-Dist: nvidia-cuda-runtime-cu12~=12.0; extra == "cuda"
Requires-Dist: nvidia-cudnn-cu12~=9.0; extra == "cuda"
Requires-Dist: nvidia-cufft-cu12~=11.0; extra == "cuda"

Motivation and Context

Jian had a PR: #22506. This adds part of the change for testing.