Add GitHub Actions workflow for package builds

The new workflow file for GitHub Actions has been added. It automates the process of building SDist and Wheel distribution files for the project. The workflow also includes provisions for cross-compilation on macOS, clean directory verification, and conditional uploading if the event is a release.

.github/workflows/wheels.yml

@@ -0,0 +1,114 @@
+name: Wheels
+
+on: push
+#  workflow_dispatch:
+#  release:
+#    types:
+#      - published
+
+jobs:
+  build_sdist:
+    name: Build SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Move to correct directory
+      run: |
+        mv package/* . 
+        ./get_sources
+
+    - name: Install Clang
+      run: sudo apt-get install -y clang
+
+    - name: Set environment variables for Clang
+      run: |
+        export CC=$(which clang)
+        export CXX=$(which clang++)
+
+    - name: Build SDist
+      run: pipx run build --sdist
+
+    - name: Check metadata
+      run: pipx run twine check dist/*
+
+    - uses: actions/upload-artifact@v4
+      with:
+        path: dist/*.tar.gz
+
+
+  build_wheels:
+    name: Wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+#          , windows-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Download dependencies
+      run:  |
+        cd package
+        ./get_sources
+
+    - uses: pypa/[email protected]
+      env:
+        CIBW_BEFORE_ALL: pwd && ls
+        # Cross-compile on macOS
+        CIBW_ARCHS_MACOS: x86_64 arm64
+
+        # Temporary: use pre-release Python 3.12 for stable ABI builds
+        CIBW_PRERELEASE_PYTHONS: True
+      with:
+        package-dir: 'package'
+        config-file: "{package}/pyproject.toml"
+
+    - name: Verify clean directory
+      run: git diff --exit-code
+      shell: bash
+
+    - name: Upload wheels
+      uses: actions/upload-artifact@v4
+      with:
+        path: wheelhouse/*.whl
+        name: dist-${{ matrix.os }}
+
+
+  upload_all:
+    name: Upload if release
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+
+    steps:
+    - uses: actions/setup-python@v5
+
+    - uses: actions/download-artifact@v4
+      with:
+        merge-multiple: true
+        pattern: dist-*
+        path: dist
+
+    - uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_API_TOKEN }}
+
+  debug:
+      needs: [build_wheels, upload_all]
+      runs-on: ubuntu-latest
+      if: ${{ failure() }}
+      steps:
+        - uses: actions/checkout@v3
+        - name: Notify chat
+          uses: teknatha136/actions-google-chat-text-message@main
+          with:
+            google-chat-webhook: ${{ secrets.WEBHOOK_URL }}
+            text-message: ${{ github.actor }} attempted to merge a change into NucleoFind, but the automatic deployment failed.\nThis message was generated due to a ${{ github.event_name }}.\nLink ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }} \n