.Net: Include Gemini thought summaries as reasoning content

[hiberus-problesa-sacyr]

Feature Request

Include Gemini thought summaries as reasoning content

Description

Currently, Gemini 2.5 Pro returns its internal thoughts when the include_thoughts parameter is set.
It would be great if Semantic Kernel could support this parameter, allowing the retrieval of the model's thought summaries as reasoning content, both in direct responses and in streaming mode.

This feature would allow end users to understand the reasoning process behind the model’s answers, providing more transparency and interpretability in AI responses.

Thanks!