[ADD] base: South America group

Closes #15284

odoo/addons/base/res/res_country_data.xml

@@ -1784,5 +1784,13 @@
                 ref('pl'),ref('pt'),ref('ro'),ref('sk'),ref('si'),
                 ref('es'),ref('se'),ref('uk')])]"/>
         </record>
+
+        <record id="south_america" model="res.country.group">
+            <field name="name">South America</field>
+            <field name="country_ids" eval="[(6,0,[
+                ref('ar'),ref('bo'),ref('br'),ref('cl'),ref('co'),
+                ref('ec'),ref('fk'),ref('gs'),ref('gf'),ref('gy'),
+                ref('py'),ref('pe'),ref('sr'),ref('uy'),ref('ve')])]"/>
+        </record>
     </data>
 </odoo>