Pytest: Initial implementation
This module adds the gtest_discover_tests
equivalent of Pytest with test discovery and execution through CTest.
I first uploaded it on Github, but thought it might be useful for others as well.
It was tested locally (Windows 10, CMake 3.20.2, Python 3.8.5, Pytest 6.2.4)
but I also created a workflow to matrix test it on Ubuntu with different Pytest versions and it seems to work fine.