Powered light ECS (#5028)

* Brrrr ECS

* Create lit on powered system

* Light bulb ECS

* Finishing porting to ECS

* Minor touches

* Removed events

* Removed old comments

* Fixed test

* To popup system

Content.Client/Light/Visualizers/LightBulbVisualizer.cs

@@ -0,0 +1,42 @@
+using Content.Shared.Light;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Shared.Maths;
+
+namespace Content.Client.Light.Visualizers
+{
+    [UsedImplicitly]
+    public class LightBulbVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent<SpriteComponent>(out var sprite))
+                return;
+
+            // update sprite state
+            if (component.TryGetData(LightBulbVisuals.State, out LightBulbState state))
+            {
+                switch (state)
+                {
+                    case LightBulbState.Normal:
+                        sprite.LayerSetState(0, "normal");
+                        break;
+                    case LightBulbState.Broken:
+                        sprite.LayerSetState(0, "broken");
+                        break;
+                    case LightBulbState.Burned:
+                        sprite.LayerSetState(0, "burned");
+                        break;
+                }
+            }
+
+            // also update sprites color
+            if (component.TryGetData(LightBulbVisuals.Color, out Color color))
+            {
+                sprite.Color = color;
+            }
+        }
+    }
+}