feat(freight-api): seal EDR side of contracts with the one global stamp

apps/edr-freight-api/src/modules/bookings/dto/contract-view.dto.ts

@@ -12,6 +12,12 @@ export class ContractSignatureDto {
 
   @ApiPropertyOptional()
   signatureImageUrl?: string | null;
+
+  @ApiPropertyOptional({
+    description:
+      'Company seal beside the signature. Set for the EDR (STAFF) side from the single global company stamp; null for the client side.',
+  })
+  stampImageUrl?: string | null;
 }
 
 export class SavedSignatureViewDto {