Add .github/workflows: initial implementation, uncompleted

.github/workflows/tests.yml

@@ -0,0 +1,29 @@
+name: tests
+on:
+  push
+jobs:
+  foo:
+    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        python-version:
+          - '3.9'
+          - '3.10'
+          - '3.11'
+          - '3.12'
+    steps:
+      - name: checkout
+        uses: checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: bootstrap
+        working-directory: .
+        run: |
+          docker compose -f tests/config/docker-compose.yml up -d
+          sleep 120
+          ./tests/config/bootstrap
+      - name: tests
+        working-directory: .
+        run: pytest -v --cov=pygelf