[nnc] Started codegenning some external calls (#58118)
Summary:
Currently only supports native ops that have all tensor arguments, an out variant, and no kwargs.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58118
Reviewed By: ejguan
Differential Revision: D28421323
Pulled By: Chillee
fbshipit-source-id: 1c75c900415deca63fcc0e496e3bac126f21bf49
