Creates a new table metadata containing a single row with two columns data_dump_updated_at and iati_tables_updated_at, which flows through to all output formats
Had to rework a bit of the logic for where the prefix column is added, as it was preventing tables without this column from flowing through to other output formats
metadatacontaining a single row with two columnsdata_dump_updated_atandiati_tables_updated_at, which flows through to all output formatsprefixcolumn is added, as it was preventing tables without this column from flowing through to other output formats