Changes to Start Interview

removed the optional property interview/use_agentic_synthesis from the response with the 200 status

added the optional property interview/conversation_mode to the response with the 200 status

added the optional property interview/live_voice to the response with the 200 status

the use_agentic_synthesis response's property default value changed from false to true for the status 200

added the optional property interview/completion_redirect_url to the response with the 200 status

added the optional property interview/agent_template_id to the response with the 200 status

added the optional property interview/draft_guide_revision to the response with the 200 status

endpoint added