Export current device package config

The current "export current selection" feature writes out packages selected for uninstall/disable.
What would be great:
- connect a device
- UAD reads from the device the status of all the packages that are there (enabled AND disabled ones) - this is already the case, as UAD currently shows "Restore" for packages that are currently disabled.
- have a button to export this "as-is" situation (so that one could go back to this "known-good" state after disabling additional packages

Look at the existing export feature for selected packages to understand the data structure and file writing logic. Then find where UAD reads package statuses from the device (likely in device communication modules). The new button should capture both enabled and disabled packages into a configuration file. Check the GUI code for adding the button and connecting it to the export logic.

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