### Motivation and Context
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Add support for Azure AI Agents: 
-
https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/ai/Azure.AI.Projects/src/Custom/Agent
- https://learn.microsoft.com/en-us/azure/ai-services/agents/

Fixes: #10114

### Description
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These notes will help understanding how your code works. Thanks! -->

- Adds `AzureAIAgent` type in a new project/package
- Maintains parity with `OpenAIAssistantAgent` 
- Supports Azure specific tool offerings

### Contribution Checklist
<!-- Before submitting this PR, please make sure: -->

- [X] The code builds clean without any errors or warnings
- [X] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [X] All unit tests pass, and I have added new tests where possible
- [X] I didn't break anyone 😄