Use unboxed registration for most of operators used in lite interpreter. (#30239)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30239
Use unboxed registration per smessmer 's request. For some ops with optional arg or tensor list that unboxed registration are not supported, we still use boxed.
Test Plan: Imported from OSS
Differential Revision: D18653846
Pulled By: iseeyuan
fbshipit-source-id: c22ce8111dfff0ba63316a9bcfe2b712b2d31fc1
