CI: Automate black

.github/workflows/black.yaml

@@ -0,0 +1,34 @@
+name: black
+
+on:
+  push:
+    paths:
+      - '**.py'
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  black:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.x
+    - name: Install black
+      run: |
+        python -m pip install --upgrade pip
+        pip install black
+    - name: Version
+      run: |
+        python --version
+        black --version
+    - name: Run black
+      run: |
+        black markdown_include
+    - uses: stefanzweifel/git-auto-commit-action@v4
+      with:
+        commit_message: "Apply black changes"

pyproject.toml

@@ -40,3 +40,5 @@ packages = ["markdown_include"]
 
 [tool.setuptools.dynamic]
 version = { attr = "setuptools_scm.get_version" }
+
+[tool.black]