fix: add missing babel plugin

Author: transitive-bullshit

template/default/package.json

@@ -29,6 +29,7 @@
   "devDependencies": {
     "microbundle-crl": "^0.13.10",
     "babel-eslint": "^10.0.3",
+    "@babel/plugin-syntax-object-rest-spread": "^7.8.3",
     "cross-env": "^7.0.2",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.7.0",

template/typescript/package.json

@@ -36,6 +36,7 @@
     "@types/react-dom": "^16.9.7",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
+    "@babel/plugin-syntax-object-rest-spread": "^7.8.3",
     "microbundle-crl": "^0.13.10",
     "babel-eslint": "^10.0.3",
     "cross-env": "^7.0.2",