feat: add import tests workflow for multiple Python versions in CI

Author: kwaak

.github/workflows/unit_tests.yml

@@ -73,3 +73,29 @@ jobs:
           name: codecov-umbrella
           fail_ci_if_error: true
           verbose: true
+
+  import-test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+    steps:
+      - uses: actions/checkout@v4.2.2
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5.3.1
+        with:
+          version: "0.5.21"
+          enable-cache: true
+
+      - name: "Set up Python ${{ matrix.python-version }}"
+        uses: actions/setup-python@v5.4.0
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install the core package only
+        run: uv sync
+
+      - name: Run import tests
+        run: |
+          uv run pytest tests/test_imports.py