action refactor proper ecs edition (#27422)

Content.Client/Actions/ActionEvents.cs

@@ -1,3 +1,6 @@
+using Content.Shared.Actions.Components;
+using static Robust.Shared.Input.Binding.PointerInputCmdHandler;
+
 namespace Content.Client.Actions;
 
 /// <summary>
@@ -7,3 +10,17 @@ public sealed class FillActionSlotEvent : EntityEventArgs
 {
     public EntityUid? Action;
 }
+
+/// <summary>
+/// Client-side event used to attempt to trigger a targeted action.
+/// This only gets raised if the has <see cref="TargetActionComponent">.
+/// Handlers must set <c>Handled</c> to true, then if the action has been performed,
+/// i.e. a target is found, then FoundTarget must be set to true.
+/// </summary>
+[ByRefEvent]
+public record struct ActionTargetAttemptEvent(
+    PointerInputCmdArgs Input,
+    Entity<ActionsComponent> User,
+    ActionComponent Action,
+    bool Handled = false,
+    bool FoundTarget = false);