Add workflow_dispatch CI for building and publishing wheels to PyPI

.github/workflows/publish.yml

@@ -0,0 +1,47 @@
+name: Publish to PyPI
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install build dependencies
+        run: pip install build
+
+      - name: Build wheel and sdist
+        run: python -m build
+
+      - name: Upload dist artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+  publish:
+    needs: build
+    runs-on: ubuntu-latest
+    environment: pypi
+    permissions:
+      id-token: write
+    steps:
+      - name: Download dist artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+      - name: Publish to PyPI (skip existing versions)
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          skip-existing: true