add pylint but do not stop on issues

.github/workflows/ci.yml

@@ -20,5 +20,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install markdown pdoc3 webencodings pyparsing twine autopep8 pylint pytest
+      - name: Run pylint
+        run: pylint --exit-zero meshtastic
       - name: Run tests with pytest
         run: pytest