- Improved JSON Parsing in Response Handler: The response handler now parses the response body as a generic JSON value using serde_json::Value. This
allows for more flexible handling of different response structures, especially for webhook integrations which might not always return a 
FluentCliOutput object.
- Extracting Data from Generic JSON: The updated handler now extracts specific fields like "text" and "agentReasoning" from the generic JSON object.
This ensures compatibility with various response formats.
- Added Webhook Support:  Added configurations for interacting with webhook endpoints. This allows integration with services like n8n for image 
generation and chat flows.
- Updated Payload Preparation: The prepare_payload function now better handles different engine types, including updating tweaks configurations with
full questions for Langflow integrations.
- Enhanced Configuration Handling:  The CLI now supports nested key-value pairs in override and tweak configurations, providing more fine-grained 
control over parameters.
- Preserving Array Structures: When updating configuration values, the code now preserves existing array structures instead of overwriting them, 
allowing for more flexible customization.

Benefits:

- Increased Flexibility: The CLI can now interact with a wider range of services and handle diverse response formats.
- Improved User Experience: The enhanced configuration handling provides users with more control and customization options.
- New Integrations: Webhook support opens up possibilities for integrating with various third-party services.

Testing:

-  Verified that the updated response handler correctly parses and displays responses from both Flowise and Langflow endpoints.
-  Tested the webhook integrations by successfully sending requests and receiving responses from the configured endpoints.
-  Confirmed that the updated configuration handling correctly applies overrides and tweaks to different engine types.

This PR enhances the functionality and flexibility of the Fluent CLI, making it a more powerful tool for interacting with AI agents and services.