fix: threaded_stream (#1463)

* chore: add more test_threaded_stream tests

* lint

* add support for python 3.7

* test fix

* allow for async callbacks

* remove example

* remove prints

* format file

* update readme

* ruff

* fix test import

* add conftest

* fix: fix test for 3.12

* fix test for 312

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Co-authored-by: carlosmiei <43336371+carlosmiei@users.noreply.github.com>
Co-authored-by: Pablo <pablo@Pablos-MacBook-Pro.local>