[NOTICE] BE code format

[陈明雨]

Hi all,
I will merge this PR[1] today to format all BE code using clang.
And aslo enable the code format check as required check.


[1] https://github.com/apache/incubator-doris/pull/9305




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此致！Best Regards
陈明雨 Mingyu Chen

Email:
chenmin...@apache.org