We want the check_database_schema cli to be extended in two way:

1) we want to categorize each issue to be critical / error / warning or info similar to other checks. The idea being that something like a missing table is critical and should be fixed asap, but an unexpected table is a warning. An unexpected index could be informational only.
2) where possible and 100% safe we want to be able to auto fix issues. eg if a fields default value is 0 instead of null then we can just fix that on the spot