add purchase_rappel. manage rappel commission for vendors

purchase_rappel/models/res_partner.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from odoo import fields, models
+
+
+class ResPartner(models.Model):
+    _inherit = "res.partner"
+
+    rappel_commission = fields.Boolean(
+        string="Rappel Commission",
+        help="If enabled, vendor bills from this partner will be eligible for rappel "
+        "commission invoicing.",
+    )
+    rappel_commission_rate = fields.Float(
+        string="Commission Rate (%)",
+        digits=(5, 4),
+        help="Percentage applied on the taxable base of vendor bills to calculate the "
+        "rappel commission amount.",
+    )