Feature: handle when additional tables are added to the connector config

### Feature description

In some cases, the connector configuration can be changed to stream additional tables.
To support this, the publication will need to be updated to add the new tables.

Additionally, the new table should be snapshotted before logrepl has been resumed.

Start by tracing how connector configuration changes are handled and how PostgreSQL publications and logical replication are initialized. Check the flow for adding configured tables, then determine where the new table must be snapshotted before logrepl resumes. Done means newly added tables are included in the publication and receive an initial snapshot before streaming continues.

Written by the indexing model from the issue text.