add lint ci

.github/workflows/lint.yml

@@ -0,0 +1,22 @@
+name: Lint
+
+on: [push, pull_request]
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python 3.12
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.12"
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install black
+
+    - name: Check code style with Black
+      run: |
+        black . --diff --color --force-exclude "/DCA/DCA/"