Framework changed to WPF

Only the basic window frame is implemented.
Adjusted the structure of resource files.

Source/GrasscutterTools/Events/CommandGeneratedEventArgs.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace GrasscutterTools.Events
+{
+    public class CommandGeneratedEventArgs : EventArgs
+    {
+        public CommandGeneratedEventArgs(string command = "")
+        {
+            Command = command;
+        }
+
+        public string Command { get; set; }
+    }
+}

Source/GrasscutterTools/Events/ListChangedEventArgs.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Collections.Generic;
+
+namespace GrasscutterTools.Events
+{
+    public class ListChangedEventArgs : EventArgs
+    {
+        public IEnumerable<string> List { get; set; }
+    }
+}