fix: add dot nojekyll in playground to fix github pages (#953)

Author: kennethaasan

playground/package.json

@@ -3,7 +3,7 @@
   "version": "1.4.1",
   "private": true,
   "scripts": {
-    "build": "next build",
+    "build": "next build && touch out/.nojekyll",
     "start": "next dev",
     "lint": "next lint",
     "install:reactcomp": "chmod +x ./bump-react-comp.sh && ./bump-react-comp.sh"