missing Authlib stubs for integrations cause poor developer experience

[StephenWithPH]

typeshed/stubs/Authlib/@tests/stubtest_allowlist.txt

Lines 50 to 60 in 1be2c3f

	# Exclude integrations dirs:
	authlib.integrations.django_client
	authlib.integrations.django_oauth1
	authlib.integrations.django_oauth2
	authlib.integrations.flask_client
	authlib.integrations.flask_oauth1
	authlib.integrations.flask_oauth2
	authlib.integrations.httpx_client
	authlib.integrations.requests_client
	authlib.integrations.sqla_oauth2
	authlib.integrations.starlette_client

With these integrations omitted from the stubs, users of AuthLib get inaccurate feedback when trying to use most of authlib.integrations.

For example:

from authlib.integrations.django_client import OAuth

... produces unhappy intellisense:

Cannot find reference 'django_client' in 'authlib.integrations'

This is workaroundable once a developer knows what's going on, but it's a bit of bother.

[srittau]

I'm not sure why we exclude the integrations, possibly because they cause problems in CI. That said, I think we should indeed include them in the stubs, or – at minimum – describe why they are missing. Any PRs welcome!

[donbarbos]

They were indeed added because they cause ModuleNotFound errors for third-party libs used in the source code