Local response norm (#28759)
Summary:
Implemented LocalResponseNorm and some initial tests for modules and functional. Reference https://github.com/pytorch/pytorch/issues/25883
Pull Request resolved: https://github.com/pytorch/pytorch/pull/28759
Differential Revision: D18219745
Pulled By: yf225
fbshipit-source-id: e6aad568a8b1e81f54752decaefd4f9044029da9
