New control: CheckedButtonList

- new control for having a checked listview with paging possible
- new CheckedChangedEventArgs class
- adding Test for CheckedButtonList
- refactoring MultiView Test

TelegramBotBase/Args/CheckedChangedEventArgs.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using TelegramBotBase.Form;
+
+namespace TelegramBotBase.Args
+{
+    public class CheckedChangedEventArgs : EventArgs
+    {
+        /// <summary>
+        /// Contains the index of the row where the button is inside. 
+        /// Contains -1 when it is a layout button or not found.
+        /// </summary>
+        public int Index { get; set; }
+
+
+        /// <summary>
+        /// Contains all buttons within this row, excluding the checkbox.
+        /// </summary>
+        public List<ButtonBase> Row { get; set; }
+
+
+        /// <summary>
+        /// Contains the new checked status of the row.
+        /// </summary>
+        public bool Checked { get; set; }
+
+
+        public CheckedChangedEventArgs()
+        {
+
+        }
+
+        public CheckedChangedEventArgs(List<ButtonBase> row, int Index, bool Checked)
+        {
+            this.Row = row;
+            this.Index = Index;
+            this.Checked = Checked;
+        }
+
+
+    }
+}