[IMP] base: add model constraint search view
[IMP] base: add model constraint search view

The constraint view in Odoo has no good quick search options to filter/group and find
specific constraints easily.
This commits allows you to easily group and search for the most used values of
constraints. This will make the finding of constraints easier for functional people.

closes odoo/odoo#41288

Signed-off-by: Martin Trigaux (mat) <cc7c5be316e48d137cbb549833b85d91034d799d@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo