To align with the removal of IoT Box support in the community version, we've consolidated all related functionality into the Enterprise module. This ensures that future IoT Box integrations and support are handled exclusively within the Enterprise offering, streamlining our product development efforts.

As we decided to remove support for IoT Boxes in community, we have to move all community-IoT logic to Enterprise.
This commit moves everything related to IoT from `point_of_sale` to `pos_iot`.

Community PR: odoo/odoo#219256
Task: 4394403