* move merge and compare states to vault core
* move MergeState, CompareStates and ParseRequiredStates to api package
* fix merge state reference in API Proxy
* move mergeStates test to api package
* add changelog
* ghost commit to trigger CI
* rename CompareStates to CompareReplicationStates
* rename MergeStates and make compareStates and parseStates private methods
* improved error messaging in parseReplicationState
* export ParseReplicationState for enterprise files
