added pylinter to workflow

.github/workflows/pylinter.yml

@@ -0,0 +1,30 @@
+name: Run Pytest on Backend
+
+on:
+  push:
+    paths:
+      - "backend/**"
+  pull_request:
+    paths:
+      - "backend/**"
+
+jobs:
+  pylint-backend:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install pylint
+
+      - name: Lint with Pylint
+        run: pylint backend/app.py