ci: add GitHub Actions for Python testing

Added Python workflow to use unittest instead of pytest and changed checkout action version.

Author: n1xsi

.github/workflows/python-app.yml

@@ -0,0 +1,24 @@
+# This workflow will install Python dependencies, run tests and lint with a single version of Python
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Run Tests
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .
+    - name: Test with unittest
+      run: |
+        python -m unittest discover tests