Document the partial update feature in ObjectModel

[jolelievre]

ObjectModel has a partial update feature that is hardly used

I was extensively used for the Product page migration, but it's the first real use case in the core (besides QuickAccess limited use). It should be more detailed and explained inside the docs

Note

There were some major bugs in the initial implementation that were fixed in the underdevelopment 8.0 version, we should either backport those fixes in 1.7, or only document the feature for 8.0 as it won't be correctly usable in 1.7 versions as of now

See PR https://github.com/PrestaShop/PrestaShop/pull/25464 for more details about the fixed bugs

[matks]

Added to https://github.com/PrestaShop/docs/issues/1325

[thomasnares]

Doc added here https://github.com/PrestaShop/docs/pull/1531

[thomasnares]

https://devdocs.prestashop-project.org/8/development/components/database/objectmodel/#partial-update-of-an-object

Is it enough ? @kpodemski should we close?