ci: use GitHub Actions

Author: teutat3s

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+name: Python CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python:
+          - {version: "3.9", toxenv: "py39"}
+          - {version: "3.10", toxenv: "py310"}
+          - {version: "3.11", toxenv: "py311"}
+          - {version: "3.12", toxenv: "py312"}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python.version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python.version }}
+      - name: Install dependencies
+        run: python -m pip install tox
+      - name: Run tests
+        run: tox -e "${{ matrix.python.toxenv }}"