[Feature]: opticalFlow HIP program

[zjin-lcf]

Suggestion Description

The CUDA program is available at https://github.com/NVIDIA/cuda-samples/tree/master/Samples/5_Domain_Specific/HSOpticalFlow
Is there a HIP program ?

For users who are not familiar with graph APIs in general, it is not clear if some features are supported by HIP graph APIs. Adding the official HIP program will help users see these differences if any.

Thanks

Reference
ORNL/HeCBench#191

GPU

CDNA2, RDNA