Improve the architecture description

[ttoine]

There are already two interesting resources:

• the file organisation on the Devdocs
• The Current Architecture on the Build Blog

However, we can see when a new core developer joins the team at PrestaShop that this is not easy to start without mentoring from the colleagues. This must be even more difficult for people outside the company.

That's why the architectures description must be improved and describes extension capabilities (e.g: web services and modules, ...), and more.

[eternoendless]

This is still a work in progress but the build article has been updated here: https://devdocs.prestashop.com/1.7/development/architecture/introduction/

[ttoine]

what else should be documented to help new comers to understand and get started? could you list some topics, @eternoendless ?