Add conversation is replying usage example

[jasveena15]

Description

This pull request adds a new SplashKit usage example for the conversation_is_replying function in the Generative AI category.

The example demonstrates how conversation_is_replying can be used to determine whether a language model is still generating a response. While the conversation is replying, the program continuously retrieves and displays each reply piece using conversation_get_reply_piece. Once the response is complete, the program displays a completion message.

The usage example has been implemented consistently across all supported languages:

• C++
• C# (Top-Level Statements)
• C# (Object-Oriented)
• Python

A descriptive title and an animated GIF demonstrating the streaming behaviour are also included.

No additional dependencies are required.

Type of change

• New feature (non-breaking change which adds functionality)
• Documentation (update or new)

How Has This Been Tested?

The example was tested locally in all supported languages.

Testing performed:

• Executed the Python example using SplashKit Manager.
• Compiled and ran the C++ example successfully.
• Tested both C# Top-Level Statements and Object-Oriented implementations.
• Verified that conversation_is_replying correctly reports when the language model is still generating a response.
• Confirmed that reply pieces were streamed using conversation_get_reply_piece until the reply was complete.
• Verified consistent behaviour across all four language implementations.
• No runtime errors occurred during testing.

Testing Checklist

• Tested in latest Chrome
• Tested in latest Firefox
• npm run build
• npm run preview

Checklist

If involving code

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

If modified config files

• I have checked the following files for changes:
  • package.json
  • astro.config.mjs
  • netlify.toml
  • docker-compose.yml
  • custom.css

Folders and Files Added/Modified

Added

• public/usage-examples/generative_ai/conversation_is_replying-1-example.cpp
• public/usage-examples/generative_ai/conversation_is_replying-1-example-top-level.cs
• public/usage-examples/generative_ai/conversation_is_replying-1-example-oop.cs
• public/usage-examples/generative_ai/conversation_is_replying-1-example.py
• public/usage-examples/generative_ai/conversation_is_replying-1-example.txt
• public/usage-examples/generative_ai/conversation_is_replying-1-example.gif

Additional Notes

This example uses SplashKit's default language model and focuses on demonstrating how conversation_is_replying can be used to monitor reply generation while streaming the response in real time using conversation_get_reply_piece. The animated GIF has been included to better illustrate the streaming behaviour compared to a static image.

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[AAMIRAU]

Reviewed the changes. The conversation_is_replying example is clear and consistent across all supported language versions. The streaming behaviour is demonstrated well and the implementation looks good to me.