Resolves EmergencyLightVisualizer is Obsolete (#13887)

* Split EmergencyLightVisualizer into Component/System pair

* Server ignore EmergencyLightVisualizer

* Update YAML

* Reviews

* small

---------

Co-authored-by: AJCM <AJCM@tutanota.com>

Content.Client/Light/Components/EmergencyLightComponent.cs

@@ -2,11 +2,17 @@
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameStates;
 
-namespace Content.Client.Light.Components
+namespace Content.Client.Light.Components;
+
+[RegisterComponent]
+[NetworkedComponent]
+public sealed class EmergencyLightComponent : SharedEmergencyLightComponent
 {
-    [RegisterComponent]
-    [NetworkedComponent]
-    public sealed class EmergencyLightComponent : SharedEmergencyLightComponent
-    {
-    }
+}
+
+public enum EmergencyLightVisualLayers
+{
+    Base,
+    LightOff,
+    LightOn,
 }