feat(sql): enable rollback

[ww-daniel-mora]

• Enable users to specify a rollback command for sql commands to be executed when the resource is deleted

Fixes #

[ww-daniel-mora]

Okay @berenddeboer I'd like to propose this as an alternative to more robust role deletion. This change adds an optional rollback to Sql constructs. My hope is this actually solves the role deletion issue by enabling users to undo permissions on their own explicitly when the Sql resource is deleted.

[berenddeboer]

Thank you so much, seems to be a nice new feature!