Migration table renaming

[phungleson]

Hi, when I run sqlx migrate it will create a table _sqlx_migrations in the database.

It is not critical but it would be nice to be able to rename migration table to something else, or even put it in different schema.

[frederikhors]

This would be really helpful, please.

There is also a security problem to avoid leaking the technology used (sqlx in this case).

@phungleson have you found a way?