Django Polymorphic Stubs

[huynguyengl99]

No description provided.

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉

[srittau]

Just a quick note: We need explanations for the possible types for Any, except for obvious cases (like dict[str, Any] or Model[Any]). But especially annotations like object: Any or **kwargs: Any need an explanation on why Any was used or what types are allowed. You can also leave these fields unannotated or use Incomplete where that is not possible for now.

[huynguyengl99]

Hi @srittau , thank you for your review. Initially, I planned to create this PR to help add type hints to the upstream package. However, after discussing this with the current project lead maintainer in jazzband/django-polymorphic#647, he prefers to add the types directly in the project, as this will be much more helpful in the long term.

Because of that, I created this PR mainly to establish the initial types and to run our full type-checking workflow, ensuring the types are correct before submitting a PR back to that repository. That’s also the reason I haven’t linked an upstream issue to this PR yet. As a result, some Any types are still left in place without detailed comments for now 😅

[srittau]

In that case, it's best to just remove Any and leave the items unannotated (or use Incomplete) for now. This can always be improved in the future.