Add Stable Diffusion Benchmark on A100-PCIE-80GB (#16702)
0(1) Fix a bug in https://github.com/microsoft/onnxruntime/pull/16560
that UNet shall be set fp16 flag.
(2) Remove wget in requirements since it is no longer needed.
(3) Add benchmark numbers in A100-PCIE-80GB. Note that CUDA EP have
issue to run in batch size 4 so the number is not added.
