ci: add release please for release automation

.github/workflows/release-please.yml

@@ -0,0 +1,48 @@
+name: 'Release Please'
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+  issues: write # See issue https://github.com/googleapis/release-please-action/issues/1105
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          # NOTE: GITHUB_TOKEN doesn't run checks on Release PR
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      # The logic below handles the npm publication:
+      - uses: actions/checkout@v4
+        # these if statements ensure that a publication only occurs when
+        # a new release is created:
+        if: ${{ steps.release.outputs.release_created }}
+
+      - name: Setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          registry-url: 'https://registry.npmjs.org'
+        if: ${{ steps.release.outputs.release_created }}
+
+      - name: Install Dependencies
+        run: npm ci
+        if: ${{ steps.release.outputs.release_created }}
+
+      - name: Build
+        run: npm run build
+        if: ${{ steps.release.outputs.release_created }}
+
+      - name: Publish to NPM
+        run: npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        if: ${{ steps.release.outputs.release_created }}

.release-please-manifest.json

@@ -0,0 +1 @@
+{".":"0.2.0"}

release-please-config.json

@@ -0,0 +1,10 @@
+{
+    "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+    "include-component-in-tag": false,
+    "packages": {
+        ".": {}
+    },
+    "pull-request-header": "Release PR",
+    "pull-request-title-pattern": "chore: release v${version}",
+    "release-type": "node"
+}