Generate and publish JUnit test report

Using junit-report-action (documented at
https://github.com/marketplace/actions/junit-report-action) and nose2 JUnit
XML report plugin (documented at
https://docs.nose2.io/en/latest/plugins/junitxml.html).

Author: dlenski

.github/workflows/test_and_release.yml

@@ -57,7 +57,12 @@ jobs:
     - name: Test
       run: |
         python setup.py build
-        nose2 -v --pretty-assert
+        nose2 -v --pretty-assert --plugin nose2.plugins.junitxml --junit-xml
+    - name: Publish Test Report
+      uses: mikepenz/action-junit-report@v3
+      if: success() || failure()  # always run
+      with:
+        report_paths: 'nose2-junit.xml'
 
   # https://github.com/actions/starter-workflows/blob/main/ci/python-publish.yml
   release: