Assign UUIDs per identifier and feature in the device config

[qdot]

Trying to keep track of everything based on array indexes is a very bad idea. The amount of bookkeeping to swap between device definitions in different message versions causes a ton of bugs whenever we try to upgrade anything. We also don't really have a good way to tell when differences pop up between user config files and the main config (i.e. we add/remove features). We should be able to assign UUIDs in the config file and compare on those for lookup instead of constantly trying to keep random array indexes aligned.

[Alphalilly]

69th active issue NICE