source_id handling

[m-bossart]

Summary of changes:
Ensure every PSS/E section emitted by the parser carries a source_id, and stop import_all from producing duplicate/gutted sections.

• Add source_id to area_interchange, interarea_transfer, zone, impedance_correction, substation_data, and the 3-winding-transformer record.
• Add an owner processor that emits owner_number/owner_name + source_id (previously owner came only from the raw import_all dump).
• Exclude all already-processed sections from _import_remaining_comps!, removing the redundant space-named raw duplicates and fixing zone, which the raw dump had been overwriting.

[m-bossart]

For context, this is cleanup in the parser that is required for developing capabilities to systematically parse and compare collections of case files (e.g. seasonal power flow cases).