add PyPI publish workflow

Author: pujanajmera

.github/workflows/workflow.yml

@@ -0,0 +1,33 @@
+name: Publish to PyPI
+
+on:
+  push:
+    tags: ["v*.*.*"]      # tag like  v0.0.1  to publish
+
+permissions:
+  contents: read
+  id-token: write         # 🟢 enables OIDC for PyPI
+
+jobs:
+  build-and-publish:
+    environment: pypi
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Build sdist & wheel
+        run: |
+          python -m pip install --upgrade build
+          python -m build
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages_dir: dist     # default; just explicit
+          skip_existing: true    # don’t fail if tag was re-run