[IMP]rma enable invoicing from settings

rma/models/res_config_settings.py

@@ -18,3 +18,5 @@ class ResConfigSettings(models.TransientModel):
         readonly=False,
         implied_group="rma.group_rma_groups",
     )
+
+    module_rma_account = fields.Boolean(string="RMA invoicing")

rma/views/res_config_settings_views.xml

@@ -34,6 +34,18 @@
                                 </div>
                             </div>
                         </div>
+                        <div class="col-12 col-lg-6 o_setting_box">
+                            <div class="o_setting_left_pane">
+                                <field name="module_rma_account"/>
+                            </div>
+                            <div class="o_setting_right_pane">
+                                <label for="module_rma_account"/>
+                                <div class="text-muted">
+                                    Enable RMA invoicing
+                                </div>
+                            </div>
+                        </div>
+
                     </div>
                 </div>
             </xpath>