Add some GH actions to lint and run unit tests

.github/workflows/.flake8-config.ini

@@ -0,0 +1,5 @@
+[flake8]
+max-complexity = 15
+max-line-length = 100
+extend-exclude = *.pyc,Tests,Docs
+ignore = E722

.github/workflows/python-app.yml

@@ -0,0 +1,37 @@
+# This workflow will install Python dependencies, run tests and lint with a single version of Python
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: Python application
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ "3.9", "3.10", "3.11", "3.12" ]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8 coverage
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        pip install -e .
+    - name: Lint with flake8
+      run: |
+        # Stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --append-config=.github/workflows/.flake8-config.ini --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --append-config=.github/workflows/.flake8-config.ini --exit-zero --statistics
+    - name: Test with unittest and report coverage
+      run: |
+        coverage run -m unittest Tests.test_sp2ts
+        coverage report -m