[IMP] account: added sent status filter and list view

At the current version the user is not able to see invoice status in list view, and is also
not able to filter invoices based on their status, thus the change in the invoice list view
filters to enable the user to perform those operations.

task: 5231339

Author: Wajih-Wanis

addons/account/views/account_move_views.xml

@@ -549,6 +549,9 @@
                            invisible="payment_state == 'invoicing_legacy' or move_type == 'entry'"
                            optional="show"
                     />
+                    <field name="is_move_sent" 
+                           string="Sent Status"
+                           optional="hide"/>
                     <field name="move_type" column_invisible="context.get('default_move_type', True)"/>
                     <field name="abnormal_amount_warning" column_invisible="1"/>
                     <field name="abnormal_date_warning" column_invisible="1"/>
@@ -1595,10 +1598,15 @@
                             groups="account.group_account_secured,base.group_no_one"/>
                     <separator/>
                     <filter name="not_sent"
-                            string="Not Sent"
+                            string="Not Sent invoices"
                             domain="[('is_move_sent', '=', False)]"
                             invisible="context.get('default_move_type') in ('in_invoice', 'in_refund', 'in_receipt')"
                     />
+                    <filter name="sent"
+                            string="Sent invoices"
+                            domain="[('is_move_sent', '=', True)]"
+                            invisible="context.get('default_move_type') in ('in_invoice', 'in_refund', 'in_receipt')"
+                    />
                     <separator/>
                     <filter name="out_invoice"
                             string="Invoices"