Added Whisper from Huggingface. (#1769)
Summary:
Instead of making changes, using HF is easier / more maintainable.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1769
Reviewed By: xuzhao9, cpuhrsch
Differential Revision: D47766556
Pulled By: msaroufim
fbshipit-source-id: 8393776222fc3508bda56c9c71e45d9812e69869
