enhancement/feature request: run modes by model

I don't understand to set the chat_llm to ollama, if there is no preparation for utility_llm and/or embedding_llm to set it to local (ollama) pendants. Yes, I assume that prompting will be a challenge, so I suggest "run modes" defined by models.

the prompts-directory contains the prompts in markdown format. maybe it could help to split up the markdown files in folders, referring to a certain model. Maybe it is easier to engineer prompts for a particular model.

As a starting point, we could copy the current "master prompts", refining em for the configured model.

What do you think?

There will be an option to use different prompt folders for different purposes in next versions.