Add GPT based conversation processor to understand intent and converse with user

- Allow conversing with user using GPT's contextually aware, generative capability
- Extract metadata, user intent from user's messages using GPT's general understanding

environment.yml

@@ -12,4 +12,5 @@ dependencies:
   - pyyaml=5.*
   - pytest=6.*
   - pillow=8.*
-  - torchvision=0.*
+  - torchvision=0.*
+  - openai=0.*