Better payment remittance info display in AR Invoices

Currently the only way to add payment info in the AR invoices is to add it in the "Notes" section. We would like to be able to reserve the "Notes" section for notes that we need to add to the invoice, not the payment information. Remittance info is one of the most important part of an invoice, so there should be a better place to showcase it. On top of that, line breaks are not supported in the notes section. This causes invoices to look messy and unprofessional.