RevEng: Add DatabaseModelFactoryOptions

[bricelam]

Resolves #14602

Providers in addition to updating your method signatures, be sure to inherit from DatabaseModelFactory.

[roji]

Looks good.

This is more for my understanding... Assuming this is meant to allow us to add new scaffolding options without breaking existing providers, providers that haven't been updated to support the new options will simply ignore them, without the user being able to figure out what's going on. Does it make sense to think about some sort of capabilities API which would allow us to generate an error?

[bricelam]

providers that haven't been updated to support the new options will simply ignore them

Correct.

some sort of capabilities API which would allow us to generate an error

We can worry about specific flags when add new options, but I wonder if we should add a base DatabaseModelFactory class now (this seems like the best place to add them) or just depend on default interface methods...

[bricelam]

(Added an abstract base class.)