The result set supports field truncation

[v-kkhuang]

What is the purpose of the change

I dealt with two problems

1.If a field in the script query result set exceeds 10000 characters, it cannot be displayed properly
2.Download/upload Excel script, if a field exceeds 32767 characters, it will cause service abnormalities

Related issues/PRs

Related issues: #5298
Related pr:#5297

Brief change log

• Define the core abstraction and interfaces of the EngineConn Factory;
• Define the core abstraction and interfaces of Executor Manager.

Checklist

• I have read the Contributing Guidelines on pull requests.
• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the Linkis mailing list first)
• If this is a code change: I have written unit tests to fully verify the new behavior.

[casionone]

LGTM.