Add a new job for test installation for publishing to pypi

.github/workflows/publish_to_pypi.yml

@@ -27,6 +27,33 @@ jobs:
         name: python-package-distributions
         path: dist/
 
+  test-installation:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.10]
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        ref: 'master'
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Create and activate virtual environment
+      run: |
+        python -m venv venv
+        source venv/bin/activate
+    - name: Install dependencies and QFit
+      run: |
+        pip install --upgrade pip
+        pip install -r requirements.txt
+        pip install .
+    - name: Test installation
+      run: |
+        python -c "from qfit import Fit; print('Installation successful')"
+
   publish-to-pypi:
     name: >-
       Publish Python 🐍 distribution 📦 to PyPI