Enable representer (#705)

Author: m-dango

config.json

@@ -5,7 +5,7 @@
   "status": {
     "concept_exercises": false,
     "test_runner": true,
-    "representer": false,
+    "representer": true,
     "analyzer": false
   },
   "blurb": "Raku is a production ready new emerging language that is highly expressive, feature-packed and optimized for fun.",