feature request: Resource but for callables that return context manager

[zerlok]

Resource provider expects callable object that returns either Iterable or AsyncIterable that yields only one element (the result value for provider attribute in DI container).

I think it would be great to support python context managers too.

import typing

T = typing.TypeVar("T")


async def create_async_cm_resource() -> typing.AsyncContextManager[T]:
    ...


class DIContainer(BaseContainer):
    async_resource = providers.Resource(create_async_resource)


async def main() -> None
    await DIContainer.init_resources()  # CM instance got from `create_async_cm_resource` and it's `__aenter__` invoked
    cm_result = await DIContainer.async_resource()  # result is T
    ...
    await DIContainer.tear_down()  # CM instance `__aexit__` invoked

P.S. I'm ready to make a PR