Augmented types for system parachains

[TarikGul]

We are currently seeing the identity pallet migrated from the relay chains to the people (systems) parachain. This also means any new types in the identity pallet that are added to people runtime, will not be part of the augmented types that are generated in the API for TS enviornments since these updated types wont be apart of the substrate metadata.

We should consider also potentially augmenting these types for system parachains. It could improve a lot of the UX for developing with these new workflows.