TYP: offsets.pyi
This PR and #44922 are the last parts of #43744.
Hello @twoertwein! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:













































There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2022-02-17 03:27:46 UTC cc @simonjayhawkins  @twoertwein can you merge main

 @jbrockmendel rebased and green @twoertwein status here? > @twoertwein status here?

I think it should be ready. The open two comments would require non-typing changes, which I would like to avoid in this PR. thanks @twoertwein  hmm maybe should have rebase first, oh well, let's see