Create Python ChatApp example for AI configuration

[Copilot]

This PR adds a Python ChatApp example that mirrors the functionality of the .NET Core ChatApp sample for AI configuration.

Key Features

• Implemented using Python and Flask as required
• Uses azure-appconfiguration-provider for configuration management
• Configured to load and refresh settings from Azure App Configuration
• Integrates with Azure OpenAI for chat completions
• Supports both web interface and console-like views
• Leverages modern Python practices and the latest stable packages

Implementation Details

• Created a Python application that mirrors the functionality of the .NET Core ChatApp example
• Implemented model classes equivalent to the .NET Message and ModelConfiguration classes
• Added support for dynamically refreshing configuration from Azure App Configuration
• Built a web UI for chatting with the AI, as well as a console-like mode

Files Added

• app.py - Main Flask application with Azure OpenAI integration
• models.py - Contains data model classes for Message and ModelConfiguration
• requirements.txt - Dependencies with latest stable versions
• README.md - Setup and usage documentation
• templates/ - HTML templates for the web interface

Fixes #1064.

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[mrm9084]

I've updated the description, this should be a console app, so Flask isn't needed.

[Copilot]

I've updated the description, this should be a console app, so Flask isn't needed.

I've converted the app from a Flask web application to a console app similar to the .NET Core implementation. The changes include removing Flask dependencies, implementing a console-based interface with a continuous loop, and updating the documentation. All templates have been removed since they're not needed for a console app. See commit caf9cd0.

[Copilot]

Pull Request Overview

This PR introduces a Python ChatApp sample that mirrors the .NET Core ChatApp sample, enabling chat interactions via both web and console interfaces.

• Implements a Flask-based application that integrates Azure App Configuration and Azure OpenAI.
• Defines model classes for messages and model configurations with dynamic configuration refresh support.
• Includes updated dependency declarations and comprehensive setup documentation.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
examples/Python/ChatApp/requirements.txt	Added necessary dependencies for Azure and OpenAI integration
examples/Python/ChatApp/models.py	Added data model classes for Message and ModelConfiguration
examples/Python/ChatApp/app.py	Implemented Flask app with configuration refresh and chat logic
examples/Python/ChatApp/README.md	Documented setup, usage instructions, and configuration details

[zhenlan]

@mrm9084 the .NET ChatApp has been updated (#1075). Can you please update the python example accordingly?

[zhenlan]

Please clean up the redundant code generated by Copilot and make sure the code can run.