* Try syncing powered state to client
For some reason the client is not receiving the ApcPowerReceiverComponentState, so it's not working.
* Fix powered state not syncing to client
The client PowerReceiverSystem was abstract, which prevented it from
running initialize.
* Flip check so that it runs bigger checks first
PowerDisabled skips the others.
NeedsPower skips the receiving check.
* Disallow changing Powered manually
* Move Powered update to PowerReceiverSystem
* Move appearance to event subscription
* Move metadata component to AllEntityQuery
* Cleanup
* Move Powered update back to PowerNetSystem
It's easier to use the EntityQueries and it dosen't need to be updated
anywhere else.
* Put appearance updating back
* Move IsPowered to shared
* Simplify IsPowered
* Cleanup
* Remove duplicate PowerChangedEvent
PowerChangedEvent on ProviderChanged doesn't seem to be needed
PowerChangedEvent gets raised by in update if the power state changes
after a new provider is connected
