Add project files.

Program.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Windows.Forms;
+
+namespace BoxPacker3D
+{
+    static class Program
+    {
+        [STAThread]
+        static void Main()
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            Application.Run(new Form1());
+        }
+    }
+}