Implement AI Chatbot BackEnd

Connect the Pupster Front End to the AI API backend.

Note: this will likely require the use of credit card information - so will need to organise this with supervisor.

Possible tutorials:

https://www.youtube.com/watch?v=8L3M8G1UsYg&pp=ygUUcmVhY3QgbmF0aXZlIGNoYXRnYnQ%3D https://www.youtube.com/watch?v=8ztx68SUOQo&pp=ygUUcmVhY3QgbmF0aXZlIGNoYXRnYnQ%3D https://www.youtube.com/watch?v=nf3t5p2a5Dg&pp=ygUUcmVhY3QgbmF0aXZlIGNoYXRnYnQ%3D