chore: add release-please workflow for automatic changelog

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: vinnytherobot

.github/workflows/release-please.yml

@@ -0,0 +1,21 @@
+name: Release Changelog
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run release-please
+        id: release
+        uses: google-github-actions/release-please-action@v3
+        with:
+          release-type: python
+          default-branch: main
+          include-component-in-tag: false