Resolves SingularityVisualizer is Obsolete (#13906)

* Split SingularityVisualizer into Component/System pair

* Server ignore SingularityVisualizer

* Update YAML

* Move to SingularityComponent

Content.Shared/Singularity/Components/SingularityComponent.cs

@@ -2,6 +2,7 @@ using Robust.Shared.GameStates;
 
 using Content.Shared.Singularity.EntitySystems;
 using Robust.Shared.Audio;
+using Robust.Shared.Utility;
 
 namespace Content.Shared.Singularity.Components;
 
@@ -81,6 +82,22 @@ public sealed class SingularityComponent : Component
 
     #endregion Audio
 
+    #region Appearance
+
+    /// <summary>
+    /// The sprite layer the singularity appearance is attached to.
+    /// </summary>
+    [DataField("layer")]
+    public int Layer { get; } = 0;
+
+    /// <summary>
+    /// The base sprite file and state of the singularity.
+    /// </summary>
+    [DataField("baseSprite")]
+    public SpriteSpecifier.Rsi BaseSprite = new SpriteSpecifier.Rsi(new ResourcePath("Structures/Power/Generation/Singularity/singularity"), "singularity");
+
+    #endregion Appearance
+
     #region Update Timing
 
     /// <summary>