Sublineage queries silently fail when update-lineages has never been run for a database

[matthuska]

If you create a new database with a property for lineages, and add some sequences with lineage metadata, you will get zero results if you do a sublineage search (e.g. match --LINEAGE "B.1*") before running the update-lineages command to pull lineage information from the pangolin GitHub repos.

We should return an error when a sublineage query is performed and the lineages table is empty.

[matthuska]

Closed because we do not plan to continue covsonar 2 development. For covsonar 1 this is mostly addressed by #121