[UPD]Add bimestriel

wizard/acc_account_wizard.py

@@ -15,6 +15,7 @@ class AccAccountWizard(models.TransientModel):
     account_periodicity = fields.Selection(
         [
             ("1", "Mensuelle"),
+            ("2", "Bimestriel"),
             ("3", "Trimestrielle"),
             ("6", "Semestrielle"),
             ("12", "Annuelle"),