Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19660
Implementation of aggregated Scale operator.
The operator takes a list of tensors as an input and scales all of them them with the argument float value.
The tensor sizes can be different, therefore bookkeeping of the sizes and pointers to the tensors are
necessary for the GPU version of the kernel.
Reviewed By: BIT-silence
Differential Revision: D14984233
fbshipit-source-id: 37cc97159a4f2c38cd6fff4f5710ab7d3a773611
