* Move partition offsets sql to a separate file
* Move event types sql to a separate file
* Move event state key sql to a separate file
* Move room sql to a separate file
* Move events sql to a separate file
* Move event json sql to a separate file
* Move state snapshot sql to a separate file
* Move state block sql to a separate file
* A kafkaesque room event consumer for the roomserver.
Implement the main input loop for the roomserver.
It will receive events from a kafkaesque event source and track
where it is in the stream.
It currently does nothing with the events it consumes.
