[keyserver] Modify raw data for updates types so that they can be moved to lib

Summary:
Moving some types around so that we don't need to move keyserver types to a lib.

Depends on D9654

Test Plan: Flow

Reviewers: kamil, inka, bartek

Reviewed By: kamil

Subscribers: ashoat, wyilio

Differential Revision: https://phab.comm.dev/D9655