add bench workflow

.github/workflows/bench.yml

@@ -0,0 +1,20 @@
+name: CI
+
+on:
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - '*.md'
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - '*.md'
+
+jobs:
+  test:
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: fastify/workflows/.github/workflows//plugins-benchmark-pr.yml@3
+    with:
+      npm-script: bench