chore: add poetry and CI tests

.github/workflows/tests.yml

@@ -0,0 +1,38 @@
+name: Tests
+
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+    branches: ["**"]
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.10", "3.11", "3.12"]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install Poetry
+        run: pipx install poetry
+      - name: Install dependencies
+        run: poetry install
+      - name: Check formatting
+        run: poetry run black --check .
+      - name: Run security audit
+        run: poetry run pip-audit
+      - name: Run tests with coverage
+        run: |
+          poetry run coverage run -m pytest
+          poetry run coverage xml
+      - name: Upload coverage report
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-${{ matrix.os }}-py${{ matrix.python-version }}
+          path: coverage.xml
+