Add project files.

VirtualKeyboard/Types/KeyboardType.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace VirtualKeyboard.Wpf.Types
+{
+    public enum KeyboardType
+    {
+        Alphabet,
+        Special
+    }
+}

VirtualKeyboard/Types/UppercaseMode.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace VirtualKeyboard.Wpf.Types
+{
+    enum UppercaseMode
+    {
+        None,
+        FirstUpper,
+        AlwaysUpper
+    }
+}