Document PrestaShop 8.0.0 on devdocs.prestashop.com

Following the development of PrestaShop 8 we need to document it to be able to release PrestaShop 8.0.0 RC.

This ticket is a meta-ticket that lists all components we need to document.

Each of the item below must be documented by the developer who built it. This is not a ticket anybody can do.

List

Document software changes, BC breaks and new hooks

• https://github.com/PrestaShop/docs/issues/1447
• https://github.com/PrestaShop/docs/issues/1449

Document PrestaShop 8.0 main new features

• https://github.com/PrestaShop/docs/issues/1445
• https://github.com/PrestaShop/docs/issues/1436
• https://github.com/PrestaShop/docs/issues/1448
• https://github.com/PrestaShop/docs/issues/1340
• https://github.com/PrestaShop/docs/issues/1331
• Document new session management https://github.com/PrestaShop/PrestaShop/pull/21120

Document new developer capabilities

• Document https://github.com/PrestaShop/PrestaShop/pull/27952
• Document https://github.com/PrestaShop/PrestaShop/pull/23413

Make sure our example modules are compatible with PrestaShop 8.0

https://github.com/PrestaShop/example-modules

Review the unchecked items in the issue, especially docs issues 1340 and 23413, the session-management pull request 21120, and the example-modules repository. Start by checking the linked work and devdocs.prestashop.com; done means each listed PrestaShop 8 component is documented and the example modules are compatible.