[IMP] purchase: add supplier's pricelist search view filters and groupbys

This improvement adds two default filters and group bys to the supplier
pricelist search view: filters(active,archived) groupby:(product,vendor).

addons/product/views/product_views.xml

@@ -505,6 +505,12 @@
                 <search string="Vendor">
                     <field name="name"/>
                     <field name="product_tmpl_id"/>
+                    <filter string="Active" name="active" domain="[('date_end', '&gt;=',  (context_today() - datetime.timedelta(days=1)).strftime('%%Y-%%m-%%d'))]"/>
+                    <filter string="Archived" name="archived" domain="[('date_end', '&lt;',  (context_today() - datetime.timedelta(days=1)).strftime('%%Y-%%m-%%d'))]"/>
+                    <group expand="0" string="Group By">
+                        <filter string="Product" name="groupby_product" domain="[]" context="{'group_by': 'product_tmpl_id'}"/>
+                        <filter string="Vendor" name="groupby_vendor" domain="[]" context="{'group_by': 'name'}"/>
+                    </group>
                 </search>
             </field>
         </record>