Add priming

[wuast94]

Add Role system as configuration to enable priming

[HaroldPetersInskipp]

I would like to implement the "roles" feature in the node but I currently am unsure how I would like to set it up. It's my understanding that only certain models can utilize this feature, so I will have to come up with a solution that doesn't break existing configurations. I am open to suggestions if anyone has advice.

[Tableautin]

Is there anything new to this topic?
As far as I understand the API documentation (at least for ChatGPT), the role is always optional. So if it is not set, you can always set the role to an empty string. So it should not break any existing configurations.
If another model does not support this property, it should ignore it.

For priming, especially the "system" role would be great. So the answers can be tailored to work in the specific environment and with specific speech pattern (in my case, the AI should alsways behave as a good friend with friendly but slightly sarcastic answers.

I have no experience in AI development, but maybe I can help a little bit with the conceptual problems you are facing.