Create python_publish.yml (#1064)
Create python_publish.yml (#1064)

* Create python-publish.yml

Using starter template from the marketplace; made some modifications using the packaging.python.org guide (mainly: add a test deployment workflow).

* Remove tag requirement for test publishes, allowing testing of draft releases

* Replace dash with underscore in filename to match convention
google/openhtf,google/openhtf,google/openhtf,google/openhtf