Initialize v18 branch

Rename *_usability modules to *_usability_akretion

sale_usability_akretion/models/res_company.py

@@ -0,0 +1,13 @@
+# Copyright 2021-2022 Akretion France (https://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 fields, models
+
+
+class ResCompany(models.Model):
+    _inherit = 'res.company'
+
+    # Similar to the field static_invoice_terms in account_usability
+    static_sale_terms = fields.Text(
+        translate=True, string="Legal Terms on Quotation")