add publishing on pypi workflow

Author: r-trimbour

.github/workflows/publish.yml

@@ -0,0 +1,65 @@
+name: Build and Publish to PyPI
+
+on:
+  push:
+    branches: [main, master, lite]
+  pull_request:
+    branches: [main, master, lite]
+  release:
+    types: [published]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build_package:
+    name: Build package
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
+      - name: Install build tools
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade build twine
+
+      - name: Build package
+        run: python -m build
+
+      - name: Check package metadata
+        run: python -m twine check dist/*
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: celloracle-lite-dists
+          path: dist/*
+
+  publish_to_pypi:
+    name: Publish to PyPI
+    needs: [build_package]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+    environment:
+      name: pypi
+      url: https://pypi.org/p/celloracle-lite
+    permissions:
+      id-token: write  # For trusted publishing
+    steps:
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
+      - uses: actions/download-artifact@v4
+        with:
+          name: celloracle-lite-dists
+          path: dist
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        # Uses trusted publishing (OIDC) - no token needed!