fix(changelog): add root changelog generator (#916)

.github/workflows/release-pr.yml

@@ -0,0 +1,34 @@
+name: Release PR
+
+on:
+  push:
+    branches:
+      - 'release-please--branches--main'
+
+jobs:
+  changelog:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Update root changelog
+        uses: orhun/git-cliff-action@v4
+        with:
+          config: cliff.toml
+          args: --verbose
+        env:
+          OUTPUT: CHANGELOG.md
+          GITHUB_REPO: ${{ github.repository }}
+
+      - name: Commit root changelog
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add CHANGELOG.md
+          git diff --cached --quiet || git commit -m "chore(release): update root changelog"
+          git push