Add flake8 workflow

.github/workflows/flake8.yml

@@ -0,0 +1,26 @@
+name: Flake8
+
+on:
+  push:
+    paths:
+      - "**/*.py"
+      - "pyproject.toml"
+      - "poetry.lock"
+      - ".github/workflows/flake8.yml"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11"]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: flake8 Lint
+      uses: py-actions/flake8@v2
+      with:
+        exclude: "**/.archive/"