Carry Analytic Account to child Manufacturing Orders

This module extends the Manufacturing Order (mrp.production) so that the analytic account used for cost tracking is not lost when a manufacturing order creates child orders.

• When you confirm a manufacturing order that already has an analytic account, Odoo looks at the child manufacturing orders generated through the procurement chain and writes the same analytic account on them.
• If you later change the analytic account on the parent manufacturing order, the child manufacturing orders are updated again with the new value.
• Only orders that actually have an analytic account are processed on confirmation, so orders without one are left untouched.

It works together with the mrp_analytic module, which is required for the analytic account field to exist on manufacturing orders. The module does not add new menus, screens, buttons or reports; it only changes what happens behind the scenes when confirming or saving a manufacturing order. The affected records are manufacturing orders (mrp.production) and the stock moves and procurement groups used to find the related child orders.