Spec for jsonb-jackson migration

[jmartisk]

Spec for migrating SmallRye GraphQL from JSON-B to Jackson.
Target: SmallRye GraphQL 3.0, Quarkus 4.0
An important part is that we still need to honor JSON-B annotations (to be able to pass MicroProfile TCKs)

[geoand]

It's to evaluate this as I don't know much about the repo, but at a high level it seems reasonable

[cescoffier]

I read it quickly, looks good to me, but I am not very familiar with the SmallRye GraphQL internals

[jmartisk]

This will also need to be coordinated with Jackson 3 migration in Quarkus. I guess updating the result of this to Jackson 3 could be done in a second step.
I'll continue on this later this week

[mskacelik]

I would imagine that the JSON-B annotation compatibility module (the JsonbAnnotationIntrospector that teaches Jackson to understand @JsonbProperty, @JsonbTransient, etc.) might be useful even outside SmallRye GraphQL. There is, for instance, this module that does the same thing for JAXB.