Changes to Create agent persona

added the new optional request property knowledge_graph_id

added the optional property is_roaming to the response with the 200 status

added the optional property knowledge_graph_id to the response with the 200 status

added the optional property package to the response with the 200 status

added the new optional request property mcp_server_ids

added the optional property mcp_server_ids to the response with the 200 status

added the required property updated_at to the response with the 200 status