* add support for lifespan tasks
* allow passing args to lifespan task
* add message to the cancel call
* allow asynccontextmanager as lifespan tasks
* Fix integration.utils.SessionStorage
Previously the SessionStorage util was just looking in localStorage, but the
tests didn't catch it because they were asserting the token was not None,
rather than asserting it was truthy.
Fixed here, because I'm using this structure in the new lifespan test.
* If the lifespan task or context takes "app" parameter, pass the FastAPI instance.
* test_lifespan: end to end test for register_lifespan_task
* In py3.8, Task.cancel takes no args
* test_lifespan: use polling to make the test more robust
Fix CI failure
* Do not allow task_args for better composability
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Co-authored-by: Masen Furer <m_github@0x26.net>
