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/Light/EntitySystems/PoweredLightSystem.cs

@@ -25,6 +25,8 @@ using Robust.Shared.Timing;
 using Robust.Shared.Audio.Systems;
 using Content.Shared.Damage.Systems;
 using Content.Shared.Damage.Components;
+using Content.Shared.Power;
+using Content.Shared.Power.Components;
 
 namespace Content.Server.Light.EntitySystems
 {