Debugger UI skeleton.

src/Xenia.Debug.UI/Views/CallstackPanel.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using WeifenLuo.WinFormsUI.Docking;
+using Xenia.Debug.UI.Controls;
+
+namespace Xenia.Debug.UI.Views {
+  public partial class CallstackPanel : BasePanel {
+    private readonly Debugger debugger;
+
+    public CallstackPanel(Debugger debugger) {
+      InitializeComponent();
+      this.debugger = debugger;
+    }
+  }
+}