feat: add optional cython extension (#44)

.github/workflows/ci.yml

@@ -42,6 +42,9 @@ jobs:
           - "3.10"
         os:
           - ubuntu-latest
+        extension:
+          - "skip_cython"
+          - "use_cython"
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -55,7 +58,12 @@ jobs:
           python-version: ${{ matrix.python-version }}
           cache: "poetry"
       - name: Install Dependencies
-        run: poetry install
+        run: |
+          if [ "${{ matrix.extension }}" = "skip_cython" ]; then
+            SKIP_CYTHON=1 poetry install
+          else
+            poetry install
+          fi
       - name: Test with Pytest
         run: export $(dbus-launch); poetry run pytest --cov-report=xml
       - name: Upload coverage to Codecov