Adding the non adversarial simulator

[nagkumar91]

Description

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Testing Guidelines

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[azure-sdk]

API change check

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

azure-ai-evaluation

[changliu2]

first pass on task_simulate

[changliu2]

resolved issues after improving docstring and cut down output paths to simplify.

[changliu2]

resolved issues by improving docstring/warning messages and cutting down possible output paths to simplify.