Add job for black

.github/workflows/black.yml

@@ -0,0 +1,24 @@
+name: Check formatting with the latest black
+on:
+- push
+- pull_request
+jobs:
+  black:
+    name: Black (formatting)
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+      with:
+        path: ansible_collections/ansible/utils
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    
+    - name: Install Black
+      run: pip install black
+
+    - name: Run black --check
+      run: black --check ansible_collections/ansible/utils