Create flake8.yml

Github action to perform linting with flake8 on push and pull requests to main

.github/workflows/flake8.yml

@@ -0,0 +1,30 @@
+name: Linting with Flake8
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  flake8:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install flake8
+
+      - name: Run flake8
+        run: flake8