Add CI test workflow

Author: milanofthe

.github/workflows/tests.yml

@@ -0,0 +1,18 @@
+name: Run tests
+on: [push, pull_request]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e .[test]
+      - name: Test with pytest
+        run: |
+          pytest tests/ -v