Stock_picking_invoicing updating invoice status on sale order

[FgarcesYmant]

Is your feature request related to a problem?
Stock_Picking_Invoicing is a great module, and it works great if you only work with pickings, but when you go to your orders all of them are on status to be invoiced, so for matters of control it's kind of difficult.

Describe the solution you'd like
I'd like to update the invoice status on order, so when you invoice from the picking it updates its related order.

Describe alternatives you've considered
None for instance... just add some other columns on tree view for picking and try to keep control.

Additional context