Is your feature request related to a problem? Please describe.
We use sql-migrate (https://github.com/rubenv/sql-migrate) in our projects and we want to migrate to golang-migrate. We have a lot of migration files that we need to re-create for go-migrate format (with .up.sql, .down.sql postfix)

Describe the solution you'd like
Lib utils that would

• rewrite migrations -> migrations-legacy
• create a new migrations folder and re-create old migration files in a new format for go-migrate

Describe alternatives you've considered
Write this tiny util manually

Additional context
I am sure that would help a lot of teams to move from other migration tools to this one and make this library more popular.
We can implement migration tool for other libraries as well.