- added ToKeyboardButton to ButtonBase

- added eKeyboardType to switch between Inline and KeykboardButtons
- addes some small functions to ButtonForm
- added new control "ButtonGrid" which manages Button handling with Event Handler for each Button and can switch between InlineMode and KeyboardMode during runtime
- added also Examples to it

TelegramBotBase/Enums/eKeyboardType.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TelegramBotBase.Enums
+{
+    public enum eKeyboardType
+    {
+        /// <summary>
+        /// Uses a ReplyKeyboardMarkup
+        /// </summary>
+        ReplyKeyboard = 0,
+
+        /// <summary>
+        /// Uses a InlineKeyboardMakup
+        /// </summary>
+        InlineKeyBoard = 1
+
+    }
+}