[Enhancement] Add LongPressCompleted event to TouchEffect

src/CommunityToolkit/Xamarin.CommunityToolkit/Effects/Touch/EventArgs/LongPressCompletedEventArgs.shared.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Xamarin.CommunityToolkit.Effects
+{
+	public class LongPressCompletedEventArgs : EventArgs
+	{
+		internal LongPressCompletedEventArgs(object? parameter)
+			=> Parameter = parameter;
+
+		public object? Parameter { get; }
+	}
+}

src/CommunityToolkit/Xamarin.CommunityToolkit/Effects/Touch/GestureManager.shared.cs

@@ -199,6 +199,7 @@ internal void HandleLongPress(TouchEffect sender)
 				{
 					sender.HandleUserInteraction(TouchInteractionStatus.Completed);
 					sender.LongPressCommand?.Execute(sender.LongPressCommandParameter ?? sender.CommandParameter);
+					sender.RaiseLongPressCompleted();
 				});
 
 				if (Device.IsInvokeRequired)

src/CommunityToolkit/Xamarin.CommunityToolkit/Effects/Touch/TouchEffect.shared.cs

@@ -45,6 +45,12 @@ public event EventHandler<TouchCompletedEventArgs> Completed
 			remove => weakEventManager.RemoveEventHandler(value);
 		}
 
+		public event EventHandler<LongPressCompletedEventArgs> LongPressCompleted
+		{
+			add => weakEventManager.AddEventHandler(value);
+			remove => weakEventManager.RemoveEventHandler(value);
+		}
+
 		public static readonly BindableProperty IsAvailableProperty = BindableProperty.CreateAttached(
 			nameof(IsAvailable),
 			typeof(bool),
@@ -1156,6 +1162,9 @@ internal void RaiseHoverStatusChanged()
 		internal void RaiseCompleted()
 			=> weakEventManager.RaiseEvent(Element, new TouchCompletedEventArgs(CommandParameter), nameof(Completed));
 
+		internal void RaiseLongPressCompleted()
+			=> weakEventManager.RaiseEvent(Element, new LongPressCompletedEventArgs(LongPressCommandParameter ?? CommandParameter), nameof(LongPressCompleted));
+
 		internal void ForceUpdateState(bool animated = true)
 		{
 			if (Element == null)