Refactor "device" module into separate modules for expansion into CRM and ERP functionality

All functionality is currently contained within the devices module. To allow future expansion it should be split into multiple modules.

<img width="440" height="896" alt="Image" src="https://github.com/user-attachments/assets/3d7c9cf9-d70b-4cbb-85b6-67f6d44913e5" />