.Net: Support structured output for Ollama connector

[crickman]

Ollama supports structured-output and the underlying ChatOptions define a ResponseFormat property.

https://ollama.com/blog/structured-outputs

Be great to enable structured output support via OllamaPromptExecutionSettings and provide a sample.

[markwallace-microsoft]

Marking for Build as a nice to have

[zlbcdn]

it's great if support response format in Microsoft.SemanticKernel.Connectors.Ollama 1.62.0-alpha

[gjactat]

Hello,
I'm also looking forward to this feature. It's a must for getting answers that can be used in code.
I know there's a workaround (described in this answer). But not knowing to what extent Ollama supports the OpenAI protocol, I'd rather not venture down that path.