[MODORDERS-1428] Update acq-models with new fields in mod-orders and mod-orders-storage schema folders and implement business logic

[ykashtalian]

Purpose

MODORDERS-1428 - Update acq-models with new fields in mod-orders and mod-orders-storage schema folders and implement business logic

Approach

• Added multi-year prepayment support to purchase order lines.
• Added validatePrepaymentTerm validation.
• Update the mod-orders and mod-orders-storage schemas/examples

Related PR

acq-models PR - folio-org/acq-models#570

Pre-Review Checklist

• Self-reviewed Code — Reviewed code for issues, unnecessary parts, and overall quality.
• Change Notes — NEWS.md updated with clear description and issue key.
• Testing — Confirmed changes were tested locally or on dev environment.
• Logging: Confirmed that logging is appropriately handled.
• Breaking Changes — Handled all required actions if changes affect API, DB, or interface versions.
  • API/schema changes
  • Interface version updates
  • DB schema changes / migration scripts
• New Properties / Environment Variables — Updated README.md if new configs were added.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud