Feat: Add basic error handling to Barista Bot chat loop

[Rahul-Lashkari]

Fixes #703

Description:

This PR adds basic error handling (try...except) to the main chat loop in the examples/Agents_Function_Calling_Barista_Bot.ipynb notebook to improve robustness against potential API errors, as discussed in issue #703.

Problem:

Currently, if the chat.send_message() call fails (due to network issues, API errors, rate limits, safety blocks, etc.), the script can crash, providing a poor user experience for those running the example.

Solution:

The chat.send_message() call and subsequent response display are wrapped in a try...except Exception as e: block. If an error occurs:

• The exception message is printed.
• A user-friendly message indicating the issue is displayed.
• A 'q' option allows the user to exit the loop gracefully.
• The loop otherwise continues, allowing the user to try again.

Impact:

Improves the robustness and user-friendliness of the Barista Bot example by gracefully handling potential API errors instead of crashing.

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