Add linter to CI

.github/workflows/lint.yml

@@ -0,0 +1,31 @@
+name: style
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.11"]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install packages
+        run: |
+          pip install --upgrade pip
+          pip install pre-commit
+          pip list
+
+      - name: Lint
+        run: pre-commit run --all-files --show-diff-on-failure --color always