Entity storage now holds air (#11355)

Content.Server/Storage/Components/InsideEntityStorageComponent.cs

@@ -0,0 +1,10 @@
+namespace Content.Server.Storage.Components;
+
+/// <summary>
+///     Added to entities contained within entity storage, for directed event purposes.
+/// </summary>
+[RegisterComponent]
+public sealed class InsideEntityStorageComponent : Component
+{
+    public EntityUid Storage;
+}