Added plugin events

src/HopFrame.Web/Plugins/Events/PageChangeEvent.cs

@@ -0,0 +1,9 @@
+using HopFrame.Web.Components.Pages;
+
+namespace HopFrame.Web.Plugins.Events;
+
+public sealed class PageChangeEvent(HopFrameTablePage sender) : HopFrameTablePageEventArgs(sender) {
+    public required int CurrentPage { get; init; }
+    public required int TotalPages { get; init; }
+    public required int NewPage { get; set; }
+}