added workflows again

.gitea/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install Core with Dev Dependencies
+        run: |
+          pip install --upgrade pip
+          pip install -e .[dev]
+
+      - name: Run Quality Checks (Linter)
+        run: ruff check src/
+
+      - name: Execute Test Suite
+        run: pytest tests/ -v