In the current StorEx architecture, all of the IndexAccessMethod implementations are hierarchically subordinate to the CollectionPtr (via Collection) and they are all in different libraries. However, at the same time they all depend and call back into the owning CollectionPtr or into other parts of the hierarchy.

This creates a circular dependency.

This ticket is to resolve that circular dependency, by placing them all into the shard_role_api library, since these all are interfaces into the ShardRole.