Function order_submitted_new 

#[unsafe(no_mangle)]
pub extern "C" fn order_submitted_new(
    trader_id: TraderId,
    strategy_id: StrategyId,
    instrument_id: InstrumentId,
    client_order_id: ClientOrderId,
    account_id: AccountId,
    event_id: UUID4,
    ts_event: UnixNanos,
    ts_init: UnixNanos,
) -> OrderSubmitted