Fix an issue that resulted in Ollama models not being able to not being
able to access the input of the commands they executed (only being able
to access the result).

This properly return the function history as shown in
https://github.com/ollama/ollama/blob/main/docs/api.md#chat-request-with-history-with-tools

Previously, function input where not returned and result where returned
as a "user" role.

Release Notes:

- ollama: Improved format when returning tool results to the models