Improve ZAP Reply (Generate AI responses using a promt)

At the moment, ZapReply is available for plus plans on Callbell chat module system. It allow to automatically generate a reply based on the last message received from a customer in the chat module.

In my opinion, this functionality is limited and could be improved as follows:

1) Allow customers to connect their own OpenAI API Key.
2) Allow chat module users to generate a reply using a prompt, while contextualizing it with the content of the last message.
3) Improve the UI to make the promt button more visible.

I recently noticed this feature in the Gmail module of Google Suite and found it particularly efficient. Even more useful would be the ability to compose prompts not only by typing but also by voice note (as is in the ChatGPT app).