Add support for ConversationalS API

[devin-ai-integration]

Add support for ConversationalS API

Summary

This pull request adds support for the ConversationalS API to the Ruby WhatsApp SDK. The new feature allows users to send conversational messages through the WhatsApp API.

Changes

• Added a new class ConversationalS in lib/whatsapp_sdk/api/conversational_s.rb to handle sending conversational messages.
• Implemented the send_conversational_message method in the ConversationalS class to construct and send the appropriate API request.
• Created a new test file test/whatsapp/api/conversational_s_test.rb with test cases to verify the functionality of the send_conversational_message method.

Testing

• Ran the test suite using rake test to ensure all tests pass.
• Verified that the new tests for the ConversationalS class pass successfully.

Notes

• The new feature has been implemented in a separate branch named feature/conversationalS-api.
• Please review the changes and provide feedback.