Automatic registration of type converters

I have an annotation processor that finds type conversions and generates the code for registering them into LoganSquare automatically. The processor works by finding instances of TypeConverter that have a @TypeConversion annotation, or JsonObjects that define a conversion into model objects by implementing a ModelObjectProvider or ModelBuilderProvider interface. It would be useful to have this functionality directly built in into LoganSquare!

Start by reviewing LoganSquare's existing registration flow and how it handles TypeConverter, ModelObjectProvider, and ModelBuilderProvider implementations. Compare that behavior with the annotation processor described in the issue. Done means LoganSquare automatically discovers the annotated converters and provider-based conversions without requiring generated registration code.

Written by the indexing model from the issue text.