Keep track of passed tests

[MariusGulbrandsen]

It would be nice if it was possible to keep track of the tests that were passed or that all subtests either passed or not.

For example:

import pytest
from pytest_subtests import SubTests

def test_something(subtests: SubTests):
    with subtests.test(msg="some subtest"):
        assert False

    with subtests.test(msg="some subtest"):
        assert True

    # Suggested additional code
    assert subtests.passed, "Some subtests failed"

This would make it so that I could explicitly fail a test based on failed subtests. Sometimes a test might additionally be made of of just subtests as well. It looks misleading that my test PASSED while the subtests failed. So it didn't actually pass.