Improve the sweep plotting script to use V1 score (#480)
Summary:
This PR updates the sweep plotting script to generate score sweeping graph for V1 score.
It also adds a few features to the plot, such as subscores and on-hover score display.
Here is an example of the resulting plot:
Pull Request resolved: https://github.com/pytorch/benchmark/pull/480
Reviewed By: aaronenyeshi
Differential Revision: D31321055
Pulled By: xuzhao9
fbshipit-source-id: 77bada7e4e7c39899e48ba1d7cefbae20e7af249
