MRP Account BOM Attribute Match

This is a technical bridge module that combines two existing features: BOM cost calculation (from the Manufacturing Accounting app) and BOM lines that use component templates with attribute matching.

Without it, a BOM whose lines point to a component template (instead of a fixed product) could not be priced correctly, because the cost calculation did not know which real variant to use. With this module installed, when Odoo computes the cost of a product from its bill of materials, it first resolves each template line to the concrete product variant that matches the product being costed. Lines that do not match are ignored, and the remaining matched components are used for the price computation.

There is nothing new to configure and no new menu or screen: the module installs automatically when both related modules are present. The change is visible indirectly, in the computed cost of manufactured products whose BOMs use attribute-based component templates, for example in the product cost fields and in any report or valuation that relies on the BOM price.

It only touches the product.product model by extending the _compute_bom_price method, so all existing cost computation behaviour stays the same for BOMs that do not use component templates.