chore(startup): add cross-env dev deps

Author: coffeedeveloper

packages/startup/package.json

@@ -120,6 +120,7 @@
     "@opensumi/ide-dev-tool": "workspace:*",
     "browserfs": "^1.4.3",
     "css-loader": "^6.9.1",
+    "cross-env": "^7.0.3",
     "electron": "^22.3.21",
     "less-loader": "^12.1.0",
     "nodemon": "^2.0.15",