ci: add pkg-size action (#112)

Author: JounQin

.github/workflows/pkg-size.yml

@@ -0,0 +1,26 @@
+name: Package Size Report
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  pkg-size-report:
+    name: Package Size Report
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+          cache: yarn
+
+      - name: Package Size Report
+        uses: pkg-size/action@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}