feat(EMS-3342): no pdf - application submission - XLSX - policy

[ttbarnes]

Introduction ✏️

This PR updates the XLSX mapping sent during application submission so that the "Policy" section is partially aligned with the latest no PDF/XLSX design.

There will be more PRs for this section to be fully aligned with the latest no PDF/XLSX design.

Resolution ✔️

• Update XLSX_CONFIG_INDEXES to increment some indexes if a loss payee is assigned to an application.
• Add missing API ELIGIBILITY constants.
• Update XLSX content strings.
• Update/align XLSX policy field content strings.
• Update mapPolicy XLSX function and move all functions into their own files/directories.
• Create new XLSX mapping functions:
  • mapLossPayee
  • mapAppointedLossPayee
  • mapLossPayeeFinancialDetailsUk
  • mapLossPayeeFinancialDetailsInternational
  • mapLossPayeeLocation
• Update getPopulatedApplication to return policy data populated with loss payee data.

Miscellaneous ➕

• Update all XLSX array @returns documentation.
• Update application types.