[Discover] [Research] State container consolidation research and issue breakdown

[davismcphee]

We need to do some research to determine exactly which changes are needed for the state container consolidation and break down the individual issues for the work. This will give us a better idea of the overall effort, the order of tasks, and which changes are most crucial.

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)