for [Misc #18891]
It is a file that could be used with `git config blame.ignoreRevsFile`.
The file name `.git-blame-ignore-revs` is natively supported by GitHub,
so you don't need anything else to make it work on GitHub.
https://docs.github.com/en/repositories/working-with-files/using-files/viewing-a-file#ignore-commits-in-the-blame-view
However, for your local git repository use, if you configure `blame.ignoreRevsFile`
globally, git expects you to have the file in every git repository you
use, which is nearly impossible.
So, for your local development, you're supposed to use this file with:
```
git config --local blame.ignoreRevsFile .git-blame-ignore-revs
```
Takashi Kokubun