There are too many files in `models/migrations` folder so that I split them into sub folders.
Add team support for review request Block #11355 Signed-off-by: a1012112796 <1012112796@qq.com> Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: Lauris BH <lauris@nix.lv> Co-authored-by: Andrew Thornton <art27@cantab.net>