[OpInfo] Added ReductionOpInfo subclass of OpInfo and ported sum test (#62737)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62737
ReductionOpInfo is a specialization of OpInfo for reduction operators. For now, it is designed to work with reductions that return a single tensor and that reduce all elements along one or more dimensions to a single value. In particular this excludes operators such as `max` and `min` that return multiple tensors and `quantile` that can return multiple values.
fixes https://github.com/pytorch/pytorch/issues/49746
Test Plan: Imported from OSS
Reviewed By: ejguan
Differential Revision: D30406568
Pulled By: heitorschueroff
fbshipit-source-id: 218b1da1902f67bcf4c3681e2a0f0029a25d51f1
