Predict entitystorage (#14082)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Shared/Storage/Components/InsideEntityStorageComponent.cs

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