Promote inner enumerations

[tefra]

Enumeration members cannot be forward referenced when its needed, eg fields default values.

@dataclass
class Roor:
    value: field(default=Predefined.VALUE)

    class Predefined(Enum)
        VALUE = "abc"

For that scenario only the generator is promoting the inner enum to root class. This split flow is creating issues than have to be dealt twice early in the analyzer handlers and in the sanitizer. Another side effect is the creation of duplicate enums with the exact same members.

A good solution would be to promote all inner enum classes to root early on. This could also make working with models a bit easier as well.