ignore editor temporaries

Summary:
Quality of life addition for when playing around on OSS.

was using *.swp files for vim, but just decided to add all the temporary editor files from PyTorch's .gitignore
https://github.com/pytorch/pytorch/blob/main/.gitignore

Reviewed By: digantdesai

Differential Revision: D48017802

fbshipit-source-id: fe7d9b5084fe27784c5d974caf16014d513dae20