Sync device type changes

[tpx-mk]

Similar to the sync of the Asset-Tag and Serial please add the possibility to sync the device type.

e.g. I'm creating devices via API call from another system, but as the other system doesn't know device types it creates a "dummy device" with the according asset. Afterwards I want to adjust the device type to the proper one but 1. it's not synced to the asset and 2. it's not even possible to change the asset at all (device types of assigned assets can't be changed).