Virtual items cleanup (#23912)

* Virtual items cleanup

* Detail

* Review

---------

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Inventory/VirtualItem/VirtualItemComponent.cs

@@ -0,0 +1,16 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Inventory.VirtualItem;
+
+/// <inheritdoc cref="SharedVirtualItemSystem"/>
+[RegisterComponent]
+[NetworkedComponent]
+[AutoGenerateComponentState(true)]
+public sealed partial class VirtualItemComponent : Component
+{
+    /// <summary>
+    /// The entity blocking this slot.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public EntityUid BlockingEntity;
+}