[FEATURE] [SPARK] add async fetch hdfs result

[echo567]

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• I have searched in the issues and found no similar issues.

Describe the feature

During the Spark SQL execution phase, a thread pool is used when retrieving iterators to improve execution speed.

Motivation

Improve the speed of Spark SQL when retrieving results from HDFS

Describe the solution

Add a thread pool

Additional context

No response

Are you willing to submit PR?

• Yes. I would be willing to submit a PR with guidance from the Kyuubi community to improve.
• No. I cannot submit a PR at this time.

[github-actions]

Hello @echo567,
Thanks for finding the time to report the issue!
We really appreciate the community's efforts to improve Apache Kyuubi.