handle openapi tools

[stevepon]

Description

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Pull Request Overview

This PR adds support for handling OpenAPI tool calls in the evaluation SDK by introducing new conversion logic for openapi-based messages. Key changes include:

• Defining a new constant (_OPENAPI_FUNCTION) for openapi functions.
• Extending the break_tool_call_into_messages function to process openapi tool calls for both message creation and output conversion.
• Adding an early return if the output is None to simplify subsequent processing.

Comments suppressed due to low confidence (2)

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_converters/_models.py:183

• For consistency, consider replacing the literal "openapi" with the _OPENAPI_FUNCTION constant defined earlier.

elif tool_call.details.type == "openapi":

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_converters/_models.py:188

• [nitpick] Consider using a consistent access pattern (either dot notation or dictionary indexing) for the 'function' property to improve code readability.

"name": tool_call.details["function"]["name"],

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

azure-ai-evaluation

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