[HUDI-3501] Support savepoints command based on Call Produce Command

[XuQianJin-Stars]

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What is the purpose of the pull request

link: HUDI-3501

1. create_savepoints
2. show_savepoints
3. delete_savepoints
4. rollback_savepoints

Brief change log

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• Modify AnnotationLocation checkstyle rule in checkstyle.xml

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Committer checklist

• Has a corresponding JIRA in PR title & commit

• Commit message is descriptive of the change

• CI is green

• Necessary doc changes done or have another open PR

• For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.

[hudi-bot]

CI report:

• f0d61ff Azure: SUCCESS

Bot commands

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• @hudi-bot run azure re-run the last Azure build

[wangxianghu]

@XuQianJin-Stars thanks for your contribution
LGTM!

[Zouxxyy]

@XuQianJin-Stars Hi, create_savepoint and rollback_savepoint use different parameters, with one using commit_time and the other using instant_time, which I felt might confuse the user~