Add a test workflow

.gitea/workflows/unit-tests.yaml

@@ -0,0 +1,24 @@
+name: Unit Tests
+
+on:
+  push:
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Run unit tests
+        run: python -m unittest discover -s tests -p "test_*.py" -v