* Rename RecordStatesAsync to Record
* Rename QueryStates to Query
* Implement fanout writes
* Implement primary queries
* Simplify error joining
* Add test for query path
* Add tests for writes and error propagation
* Allow fanout backend to be configured
* Touch up log messages and config validation
* Consistent documentation for all backend structs
* Parse and normalize backend names more consistently against an enum
* Touch-ups to documentation
* Improve clarity around multi-record blocking
* Keep primary and secondaries more distinct
* Rename fanout backend to multiple backend
* Simplify config keys for multi backend mode
* Define endpoint and generate
* Wire up and register endpoint
* Cleanup, define authorization
* Forgot the leading slash
* Wire up query and SignedInUser
* Wire up timerange query params
* Add todo for label queries
* Drop comment
* Update path to rules subtree
* Copy rules instead of accepting pointer
* Deep-copy the rule, for even more guarantees
* Create struct just for needed fields
* Move RuleMeta to historian/model package, iron out package dependencies
* Move tests for dash ID parsing to model package along with code
