#让SDK中打印 submit_timing 的数据( SwqosType和 提交耗时）返回给buy 和 sell 方法。

主要解决问题：
当 wait_tx_confirmed 参数为 false 时，SUBMIT_TIMEOUT_SECS 等待改为2秒，要么全部提交完成返回，要么不等待提交未返回的交易，方便快速创建交易订单。

#Let the SDK print submit_timing data (SwqosType and submission time) and return it to the buy and sell methods.

Main problems solved:

When the wait_tx_confirmed parameter is false, the SUBMIT_TIMEOUT_SECS wait is changed to 2 seconds. Either all submissions are completed and returned, or the unreturned transactions are not waited for submission, which facilitates the rapid creation of transaction orders.

src/trading/core/async_executor.rs

@@ -562,7 +562,7 @@ pub async fn execute_parallel(
     // All jobs enqueued (no spawn on hot path)
 
     if !wait_transaction_confirmed {
-        const SUBMIT_TIMEOUT_SECS: u64 = 30;
+        const SUBMIT_TIMEOUT_SECS: u64 = 2;//无需确认的交易，一般2秒合适了 一般2秒内发送全都返回 没返回的也不等了，没返回的就是太慢的swqos 
         let ret = collector.wait_for_all_submitted(SUBMIT_TIMEOUT_SECS).await.unwrap_or((
             false,
             vec![],