Dependency intiailization / scanning issues

[Dragovorn]

On my desktop while working on fusion (game engine), I have begun observing odd registration issues leading to boot failures. Specifically related to the OnMain annotation, I suspect it's to do with the complex dependency tree that is it's GLDebugProcessor, it comes and goes randomly though, which suggests to me that there might be some sorting instability (not surprising).

[Dragovorn]

I did a stop-gap when I renamed the Transformer marker -> BeforeInjections; which basically tries to register / load everything that might be needed for transformer annotations (e.g. a service needing to be constructed) when it's detected that we're registering Inject. That seems to have helped; but we might need to introduce a specific processing step for constructing singletons.

[Dragovorn]

There would need to be multiple construction steps; one that happens before annotation processor registration that loads all necessary annotation processor services. Then a second one that happens annotation registration and initial processing that constructs "normal" priority services.