Lunny Xiao e72acd5e5b Split migrations folder (#21549) ...

There are too many files in `models/migrations` folder so that I split
them into sub folders.

2022-11-02 16:54:36 +08:00

..

db_test.go

…

db.go

…

hash.go

…

main_test.go

…

testlogger.go

…

tests.go

…