add ci

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  workflow_dispatch:
+  pull_request:
+    types: [opened, synchronize]
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: ${{ github.ref_name != 'main' }}
+
+jobs:
+  benchmark:
+    name: Benchmark
+    runs-on: ubuntu-latest
+    steps:
+      - uses: taiki-e/checkout-action@v1
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: .node-version
+          cache: pnpm
+
+      - run: pnpm run bench

.node-version

@@ -0,0 +1 @@
+20.14.0