New invoice status: Partially paid

To better distinguish between open, partially paid and paid invoices we, will introduce a new status.

Status Quo:
Invoices that are partially paid have the status “Open / Due” (200).

Future:
Invoices that are partially paid will have the status “Partially paid” (750). This change is backward compatible. This means that the endpoint GET /api/v1/Invoice/{invoiceId}/getIsPartiallyPaid will still return true for invoices with the status “Open / Due” (200) that already have transactions. So nothing will change for already existing invoices.

Affected endpoints: Any invoice endpoint that returns one or more invoices.

Release: 13.06.2024 (4.181)