Auto apply correct chat template when using OpenAI compatible API

[Tureti]

v1 api currently uses a harcoded alpaca prompt template with support for specifying adapters to change it: #466
This method is not supported in for example Open-WebUI. It would be great if koboldcpp could automatically apply the chat template specified in tokenizer.chat_template of the gguf model.

[Tureti]

Allowing to set a custom chat template for the v1 api when starting koboldcpp would be enough for a quick fix as well if that seems easier.

[LostRuins]

This is supported, see https://github.com/LostRuins/koboldcpp/wiki#what-is---chatcompletionsadapter

[Tureti]

Ok sorry I missed that.