Include "Invoice date" and "Terms" field in voucher export for each batched voucher

Purpose/Overview: Every voucher is associated with 1 invoice record and currently the the date and terms are not included in the export information. These data points will be import for some libraries to communicate how payments should be made etc. with the financial system

Requirements/Scope:

• When creating batch voucher, include the Invoice date on each Batched voucher
• When creating batch voucher, include the Invoice Terms on each Batched voucher

Approach:

1. Update logic : org.folio.services.voucher.BatchVoucherGenerateService#buildBatchedVoucher

Acceptance criteria:

• Each voucher in a batch voucher export includes the Invoice date AND Terms