Migrating Predicate API to V1

[SigmundGranaas]

Things I want to do do push the predicate api from v0 to v1

Easy support for defaulted fields in base codecs

There is only support for dynamic fields in the base predicates. It would be nice to also have an easy way to create setup fields, like target or other options for the base predicate.

Clean up the generics

The Generic types are ridiculous and makes everything hard to read. I need to clean it up and use more specific types.

Clean up KeyPair

Create a better structure/naming scheme for implementing predicates that are aware of their own key.