ci: add unasync check on ci

Author: tharropoulos

.github/workflows/test-and-lint.yml

@@ -44,6 +44,9 @@ jobs:
     - name: Install the project
       run: uv sync --locked --all-extras --dev
 
+    - name: Check sync generation
+      run: uv run python utils/run-unasync.py --check
+
     - name: Lint with Ruff
       run: |
         uv run ruff check src/typesense