Extend Xero Integration Settings to include Invoice Status & Auto-Syncronisation

Extend the current Xero integration settings to support the following integration options.  At present all invoices land in Xero as DRAFT;

Xero Purchase Invoice status: AUTHORISED,DRAFT

Xero Sales Invoice status: AUTHORISED,DRAFT

Auto-synchronisation: Yes,No

(If Yes, set the following values)

 Start Date: e.g. 23/11/2023

 Start Time: e.g. 16:30 AEST

 Sync frequency: e.g. Daily, Every 2 hours, Every 4 hours, Every 8 hours, Every 12 hours