add static analysis workflow (#81)

.github/workflows/static_analysis.yaml

@@ -0,0 +1,42 @@
+name: Static analysis
+
+on: [pull_request]
+
+permissions:
+  contents: read
+
+# Limit concurrency by workflow/branch combination.
+#
+# For pull request builds, pushing additional changes to the
+# branch will cancel prior in-progress and pending builds.
+#
+# For builds triggered on a branch push, additional changes
+# will wait for prior builds to complete before starting.
+#
+# https://docs.github.com/en/actions/using-jobs/using-concurrency
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  pre-commit-checks:
+    name: Pre-commit checks
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.9
+
+      - name: Install pre-commit
+        run: |
+          pip install pre-commit
+
+      - name: Run pre-commit
+        run: |
+          pre-commit run --show-diff-on-failure --color=always --all-files