Add ra, dec, epoch args to `ingest_names`

[This issue](https://github.com/astrodbtoolkit/astrodb-template-db/issues/174) discusses adding support for multiple positions by adding ra, dec, and epoch columns to the `names` table. To ingest multiple positions for a source using `ingest_names`, it would need to expect these as arguments.

Start by locating the ingest_names entry point and reviewing issue 174 for the proposed names-table schema. Trace how name records are currently ingested, then verify that ra, dec, and epoch can be accepted and persisted for multiple positions; the relevant ingestion tests should cover the new arguments and stored values.

Written by the indexing model from the issue text.