Addition of a first pass GH Action linter.

.github/workflows/main.yml

@@ -0,0 +1,25 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: ci
+on: [pull_request, push]
+jobs:
+  flake8-linting:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    - name: Install flake8
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install flake8 pytest
+      env:
+        POETRY_VIRTUALENVS_CREATE: false
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics