Validate engines to detect legacy adaptor modules

[devinivy]

We are changing the catbox adaptors to export { Engine } so that they are more ESM-friendly modules. We would like to pair that with an update to catbox so that it detects when a user hasn't updated usage of the adaptor to reflect this update. This should provide a friendlier upgrade path for users updating the package versions of their adaptors, and provide a more useful error message. See also https://github.com/hapijs/catbox-memory/pull/86