Add pytest job to github workflow

.github/workflows/check.yml

@@ -12,3 +12,20 @@ jobs:
         with:
           options: "--check"
           src: "./src/multiple_choice"
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install anki aqt PyQt5 PyQt6
+    - name: Test with pytest
+      run: |
+        pip install pytest pytest-cov
+        pytest --cov=src/multiple_choice/