Resolves EmergencyLightVisualizer is Obsolete (#13887)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/EntitySystems/EmergencyLightSystem.cs

@@ -0,0 +1,26 @@
+using Content.Client.Light.Components;
+using Content.Shared.Light.Component;
+using Robust.Client.GameObjects;
+
+namespace Content.Client.Light.EntitySystems;
+
+public sealed class EmergencyLightSystem : VisualizerSystem<EmergencyLightComponent>
+{
+    protected override void OnAppearanceChange(EntityUid uid, EmergencyLightComponent comp, ref AppearanceChangeEvent args)
+    {
+        if (args.Sprite == null)
+            return;
+
+        if (!AppearanceSystem.TryGetData<bool>(uid, EmergencyLightVisuals.On, out var on, args.Component))
+            on = false;
+
+        args.Sprite.LayerSetVisible(EmergencyLightVisualLayers.LightOff, !on);
+        args.Sprite.LayerSetVisible(EmergencyLightVisualLayers.LightOn, on);
+
+        if (AppearanceSystem.TryGetData<Color>(uid, EmergencyLightVisuals.Color, out var color, args.Component))
+        {
+            args.Sprite.LayerSetColor(EmergencyLightVisualLayers.LightOn, color);
+            args.Sprite.LayerSetColor(EmergencyLightVisualLayers.LightOff, color);
+        }
+    }
+}