🚀 [Feature]: Add support for Prompt Templates

[ghost]

I'm pretty sure the Open-Assistant models added in 17308a8 require different labels than the normal llama models.
I couldn't find anything on their llama huggingface repo, but in https://huggingface.co/OpenAssistant/stablelm-7b-sft-v7-epoch-3 I found this:

Prompting

Two special tokens are used to mark the beginning of user and assistant turns: <|prompter|> and <|assistant|>. Each turn ends with a <|endoftext|> token.

And I strongly believe this is the case for the llama version as well, because when I played around with it, it sometimes outputted those strings.

[gaby]

@pabl-o-ce Is this the stuff you mentioned on Discord?

[pabl-o-ce]

yes :)

[k0gen]

If you're referring to renaming chats with a custom name, that would be a must-have feature.