Add unit tests as part of CI/CD

.github/workflows/pr_unittests.yaml

@@ -0,0 +1,31 @@
+name: 📇 Code Linting
+
+on:
+  push:
+    branches: [ develop ]
+  pull_request:
+    branches: [ develop ]
+
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number}}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
+      - name: Install requirements
+        run: ./tools/manage.sh create-env
+      - name: Run tests
+        run: ./tools/manage.sh run-tests