Adding sdist and publish github action

Author: Daniel Barbalato

.github/workflows/wheels.yml

@@ -3,6 +3,23 @@ name: Build
 on: [push, pull_request]
 
 jobs:
+  build_sdist:
+    name: Build SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v6
+
+    - name: Build SDist
+      run: pipx run build --sdist
+
+    - name: Check metadata
+      run: pipx run twine check dist/*
+
+    - uses: actions/upload-artifact@v5
+      with:
+        name: cibw-sdist
+        path: dist/*.tar.gz
+
   build_wheels:
     name: Build wheels on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -37,4 +54,26 @@ jobs:
       - uses: actions/upload-artifact@v4
         with:
           name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
-          path: ./wheelhouse/*.whl
+          path: ./wheelhouse/*.whl
+
+
+  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@v6
+      with:
+        python-version: "3.x"
+
+    - uses: actions/download-artifact@v6
+      with:
+        pattern: cibw-*
+        path: dist
+        merge-multiple: true
+    - uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_password }}