Image and Audio support

[N1K0232]

In ChatGPT app, they added a support to image uploading and vocal messages.
Actually i don't know if the endpoints that allows image and audio messages uploading but is it a good idea to add two new methods to the client that allows the user to enjoy these ChatGPT features?

[marcominerva]

Adding image and audio support will be definitively great. Unfortunately, in this moment I haven't the time to implement these new features.

I'm happy to accept PR for this.

[N1K0232]

Once I understand how to call the api endpoint and how I can integrate the cache, I will try to write the method