ci: run tests with workflow

.github/workflows/test.yml

@@ -0,0 +1,14 @@
+name: Python Tests
+
+on: [push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v2
+
+    - name: Run tests
+      run: for file in $(find . -name "test_*.py"); do python $file; done