add github action to lint

Author: zingale

.github/workflows/pylint.yml

@@ -0,0 +1,33 @@
+name: pylint
+
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the main branch
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  pylint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+
+      - name: Install pylint
+        run: |
+          python -m pip install --upgrade pip
+          pip install bokeh
+          pip install pylint
+
+      - name: Validate
+        run: pylint --errors-only . *.py
+