Add workflow to run pep8 check

.github/workflows/lint.yml

@@ -0,0 +1,19 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Update pip and setuptools
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install setuptools
+      - name: Install dependencies
+        run: |
+          python -m pip install flake8
+      - name: Lint with flake8
+        run: |
+          flake8