.Net: New Feature: GeminiPromptExecutionSettings is missing optional parameter responseSchema

[jamescarter-le]

GeminiPromptExecutionSettings is missing the JSON response schema that is present on other PromptExecutionSettings to constrain the output.

Property: responseSchema
Format: OpenAPI Schema.

[evchaki]

@rogerbarreto - can you take a look at this? @jamescarter-le - thanks for submitting this, we will take a look at updating this.