[lint] add newlines linter to lintrunner (#67894)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67894
As title. Confirmed that the code base passes by running:
```
lintrunner --paths-cmd='git grep -Il ""' --take NEWLINE
```
and seeing that it pases
Test Plan: Imported from OSS
Reviewed By: H-Huang
Differential Revision: D32250604
Pulled By: suo
fbshipit-source-id: de9bcba635d21f8832bb25147b19b7b2e8802247
