Support for getting InvoiceLink with .findInvoices

[thrive-communities-code]

Hello! The InvoiceLink can only be retrieved through the QB API if the query parameter include=invoiceLink is used in the API request to get an invoice. Based on the docs and messing around with node-quickbooks, it appears that it's not possible to get the InvoiceLink through node-quickbooks. Could you add the ability to do this?