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/Power/EntitySystems/PowerReceiverSystem.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using Content.Server.Administration.Logs;
 using Content.Server.Administration.Managers;
 using Content.Server.Power.Components;
@@ -197,5 +198,17 @@ namespace Content.Server.Power.EntitySystems
         {
             comp.Load = load;
         }
+
+        public override bool ResolveApc(EntityUid entity, [NotNullWhen(true)] ref SharedApcPowerReceiverComponent? component)
+        {
+            if (component != null)
+                return true;
+
+            if (!TryComp(entity, out ApcPowerReceiverComponent? receiver))
+                return false;
+
+            component = receiver;
+            return true;
+        }
     }
 }