add back packages that were accidently removed

packages/builder/package.json

@@ -86,10 +86,17 @@
     "yup": "0.29.2"
   },
   "devDependencies": {
+    "@babel/core": "^7.12.14",
+    "@babel/plugin-transform-runtime": "^7.13.10",
+    "@babel/preset-env": "^7.13.12",
+    "@babel/runtime": "^7.13.10",
     "@rollup/plugin-alias": "^3.0.1",
     "@rollup/plugin-commonjs": "^16.0.0",
     "@rollup/plugin-json": "^4.0.3",
     "@sveltech/routify": "1.7.11",
+    "@testing-library/jest-dom": "^5.11.10",
+    "@testing-library/svelte": "^3.0.0",
+    "babel-jest": "^26.6.3",
     "cypress": "^5.1.0",
     "cypress-terminal-report": "^1.4.1",
     "eslint-plugin-cypress": "^2.11.1",