Remove IActivate (#9705)

* git mv

* purge IActivate

* File scoped NS

Content.Shared/Interaction/ActivateInWorldEvent.cs

@@ -0,0 +1,26 @@
+using JetBrains.Annotations;
+
+namespace Content.Shared.Interaction;
+
+/// <summary>
+///     Raised when an entity is activated in the world.
+/// </summary>
+[PublicAPI]
+public sealed class ActivateInWorldEvent : HandledEntityEventArgs, ITargetedInteractEventArgs
+{
+    /// <summary>
+    ///     Entity that activated the target world entity.
+    /// </summary>
+    public EntityUid User { get; }
+
+    /// <summary>
+    ///     Entity that was activated in the world.
+    /// </summary>
+    public EntityUid Target { get; }
+
+    public ActivateInWorldEvent(EntityUid user, EntityUid target)
+    {
+        User = user;
+        Target = target;
+    }
+}