Reusable odoodb pytest fixture

[sbidoul]

We have the odoodb fixture in this project, but repeated in a similar way in click-odoo-contrib. There must be a way to make something reusable.

[blaggacao]

I think, those utils are shorter lived than a real deployment cycle of a base or intermediary library. Therefore, I propose a git based workflow to fetching such common boilerplate.

I've taken a try here: https://github.com/xoe-labs/click-odoo-scaffold/blob/master/hack/sync-with-scaffold.sh

Baked into a Makefile command