Type-hints in ServerAPI (and global api)

[iLLiCiTiT]

Description

It would be nice to have typehints not just in docstrings but also in arguments. With that we might also add arguments with typehints to public functions in _api.py so IDE can actually show them.

Suggestion

Add type hints to ServerAPI methods, and modify automated_api.py to copy args/kwargs with typehints too.

[BigRoy]

I wonder if something like this could work: https://stackoverflow.com/a/71031698
See also: https://stackoverflow.com/a/68290080

We may need to somehow magically do that via "Docstrings" instead to have some form of backwards compatibility?

[iLLiCiTiT]

I already have prepared concept for stubs, but we first need to add typehints to ServerAPI.

[tadeas-hejnic]

These methods return ThumbnailContent not Union[str, None] as specified in docstring: get_folder_thumbnail, get_version_thumbnail, get_workfile_thumbnail