Changes to Получить суточную статистику пользователя

added the optional property daily_stats/items/model_stats to the response with the 200 status

the daily_stats/items/cost_request response's property pattern ^(?!^[-+.]*$)[+-]?0*\d*\.?\d*$ was removed for the status 200

the total_cost response's property pattern ^(?!^[-+.]*$)[+-]?0*\d*\.?\d*$ was removed for the status 200