[IMP] product: product description mixin

This pr adds a mixin regarding the product description.
It uses a One2Many relation which implies creating this script
for it to be used in the classes implementing the mixin.

odoo: odoo/odoo#129118
enterprise: odoo/enterprise#44384

task-2732022

src/util/indirect_references.py

@@ -85,6 +85,7 @@ def indirect_references(cr, bound_only=False):
         IR("studio_approval_entry", "model", "res_id"),
         IR("timer_timer", "res_model", "res_id"),
         IR("worksheet_template", "res_model", None),
+        IR("product_attribute_custom_value", "res_model", "res_id"),
     ]
 
     for ir in each: