feat: create config for linter checks

Author: steve148

.github/workflows/pythonapp.yml

@@ -0,0 +1,32 @@
+name: Python application
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code to check
+        uses: actions/checkout@v1
+      - name: Set up Python 3.x
+        uses: actions/setup-python@v1
+        with:
+          python-version: "3.x"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          # Install all necessary packages, including dev dependencies.
+          pip install -e ."[dev]"
+      - name: Lint with flake8
+        run: |
+          # exit-zero treats all errors as warnings.
+          flake8 .
+      - name: Test with unittest
+        run: |
+          python -m unittest discover -s tests/
+      - name: Check format with black
+        run: |
+          # Check all python files to see if black would format them.
+          # If black would format them, then the check fails.
+          black --check **/*.py