feat(DTFS2-7793): add update amendment status endpoint to dtfs-central

[MarRobSoftwire]

Introduction ✏️

The Maker needs to be able to submit the amendment to the Checker

Resolution ✔️

• Add update portal amendment status endpoint
• Add PortalFacilityAmendmentService.submitPortalFacilityAmendmentToChecker service method
• Add PortalFacilityAmendmentService.validateAmendmentIsComplete to verify the amendment can be submitted
  • This throws new AmendmentIncompleteError returning a 409 - conflict

Miscellaneous ➕

• Abstract PortalFacilityAmendmentService.updatePortalFacilityAmendment logic so only user values properties can be updated
• Add PortalFacilityAmendmentService.generatePortalFacilityAmendment mapping to keep portal facility amendments in valid shape
• Update TfmFacilitiesRepo.updatePortalFacilityAmendmentByAmendmentId to validate the status of the amendment