Comment Bundle size (diff) on PRs (#1352)

* Comment Bundle size (diff) on PRs

* fix action params

Author: louwers

.github/workflows/bundle-size.yml

@@ -0,0 +1,27 @@
+name: Bundle Size Report
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  bundle-size:
+    name: Bundle Size Report
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+        with:
+          node-version-file: '.nvmrc'
+
+      - name: Report bundle sizes
+        uses: preactjs/compressed-size-action@946a292cd35bd1088e0d7eb92b69d1a8d5b5d76a # 2.8.0
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          pattern: 'dist/index.{mjs,cjs}'