sale_confirm_wizard: add ability to skip wizard via inherit in some scenarios

sale_confirm_wizard/sale.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+# Copyright 2020 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    def sale_confirm_wizard_button(self):
+        """This method is designed to be inherited.
+        For example, inherit it if you don't want to start the wizard in
+        some scenarios"""
+        action = self.env.ref(
+            'sale_confirm_wizard.sale_confirm_action').read()[0]
+        return action