chore: add .github workflow to publish the package

Author: ksachdeva

.github/workflows/publish.yaml

@@ -0,0 +1,45 @@
+name: 'Publish on pypi'
+on:
+  release:
+    types: [created]
+  push:
+    branches: [main]
+
+jobs:
+  publish:
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/adk-dynamodb-session
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+
+      - name: Checkout (GitHub)
+        uses: actions/checkout@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and run dev container task
+        uses: devcontainers/[email protected]
+        with:
+          imageName: ghcr.io/ksachdeva/adk-chatkit
+          cacheFrom: ghcr.io/ksachdeva/adk-chatkit
+          runCmd: uv build --package adk-chatkit
+
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+            packages-dir: dist
+            skip-existing: true
+            verbose: true