add Response class, recursive voice assistant algorithm

SmallTalk/hello.py

@@ -1,12 +1,9 @@
 from .SmallTalk import *
+from Command import Response
 ################################################################################
 def method(params):
     voice = text = 'Привет'
-    return {
-        'type': 'simple',
-        'text': text,
-        'voice': voice,
-    }
+    return Response(text = text, voice = voice)
 
 patterns = ['* привет* *',]
 hello = SmallTalk('Hello', {}, patterns)