Fork Sequelize CLI To Support Sequelize-Cockroach DB

While cockroach db does not recommend using sequelize cli to handle migrations many people looking to migrate are already doing this and need a supported path forward.

I was able to tinker around and found that a path forward for using the `sequelize-cockroachdb` lib with the sequelize-cli is as simple as updating this line here https://github.com/sequelize/cli/blob/main/src/helpers/generic-helper.js#L14.

This could be a very simple way to support the sequelize cli moving forward. Lets discuss or we can close this issue if this is a wont do thing.