perf: add cross-engines benchmark

benchmark/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "benchmark",
+  "private": true,
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node --expose-gc index",
+    "engines": "node -e 'require(\"./cross-engines\").crossEngines()'"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@babel/core": "^7.13.14",
+    "@babel/preset-env": "^7.13.12",
+    "@babel/preset-react": "^7.13.13",
+    "handlebars": "^4.7.7",
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "require-from-string": "^2.0.2",
+    "swig": "^1.4.2"
+  }
+}