Power stuff (#31314)

* Power stuff

- Add shared IsPowered
- Add shared ResolveApc
- Move PowerChangedEvent to shared for now
- Add SlimPoweredLight that actually functions how you'd expect a PoweredLight to function it id didn't have a bunch of bloat on it.

* big update

* boing

Content.Server/Doors/Systems/DoorSystem.cs

@@ -1,9 +1,9 @@
 using Content.Server.Access;
 using Content.Server.Atmos.Components;
 using Content.Server.Atmos.EntitySystems;
-using Content.Server.Power.Components;
 using Content.Shared.Doors.Components;
 using Content.Shared.Doors.Systems;
+using Content.Shared.Power;
 using Robust.Shared.Physics.Components;
 
 namespace Content.Server.Doors.Systems;