ci(readme_generator): add a github actions to run tests

.github/workflows/tests_make_readme.yml

@@ -0,0 +1,22 @@
+name: Run tests for make_readme.py
+
+on: [push]
+
+jobs:
+  test:
+    name: Run tests for make_readme.py
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: 'Set up Python 3.9'
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+          cache: 'pip'
+      - name: install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r tools/readme_generator/requirements.txt
+          pip install pytest
+      - name: launch pytest
+        run: cd tools/readme_generator && pytest tests