feat(ci): add pytest and pyright tests

.github/workflows/tests.yml

@@ -0,0 +1,24 @@
+name: Python Unit Tests and Type Checks
+
+on: ["push", "pull_request"]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.10", "3.11", "3.12", "pypy3.10"]
+
+    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: pip install pytest
+      - name: Run tests
+        run: pytest test.py -v
+      - name: Check types
+        run: npx pyright