add to Tensor symmetric methods getDataAsIntArray, getDataAsByteArray (#25183)
Summary:
Tensor has getDataAsFloatArray(), we also support Int and Byte Tensors,
adding symmetric methods for Int and Byte, that will throw
IllegalStateException if called for not appropriate type
Pull Request resolved: https://github.com/pytorch/pytorch/pull/25183
Reviewed By: dreiss
Differential Revision: D17052674
Pulled By: IvanKobzarev
fbshipit-source-id: 1d44944461ad008e202e382152cd0690c61124f4
