attempt to add python black formatting

.github/workflows/pythonpackage.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Check compliance with black
       uses: lgeiger/black-action@master
       with:
-        args: ". --check"
+        args: --check dataengineeringutils3/ tests/
     - name: Lint with flake8
       run: |
         pip install flake8