add keyword extraction in graph (#1373)

### What problem does this PR solve?
#918 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

graph/templates/interpreter.json

@@ -1,5 +1,5 @@
 {
-  "id": 2,
+  "id": 3,
   "title": "Interpreter",
   "description": "An interpreter. Type the content you want to translate and the object language like: Hi there => Spanish. Hava a try!",
   "canvas_type": "chatbot",