[improvement][refactor](vec) Refactor serde of vec block and using brpc attachment - #7939

[improvement][refactor](vec) Refactor serde of vec block and using brpc attachment#7939

morningman merged 2 commits into

apache:masterapache/doris:masterfrom

morningman:vec_serdemorningman/doris:vec_serdeCopy head branch name to clipboard