ci: add publishing workflow (#16)

.github/workflows/publish.yaml

@@ -0,0 +1,31 @@
+name: Latest Release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish-release:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
+      - uses: pdm-project/setup-pdm@v3
+        name: Set up PDM
+        with:
+          python-version: "3.11"
+          allow-python-prereleases: true
+          cache: true
+
+      - name: Build package
+        run: pdm build
+
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1