Implemented box upload.

library/Structures/BoxRecord4.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace PkmnFoundations.Structures
+{
+    public class BoxRecord4
+    {
+        public BoxRecord4()
+        {
+        }
+
+        public BoxRecord4(int pid, BoxLabels4 label, long serial_number, byte[] data)
+        {
+            if (data.Length != 540) throw new ArgumentException("Box data must be 540 bytes.");
+
+            PID = pid;
+            Label = label;
+            SerialNumber = serial_number;
+            Data = data;
+        }
+
+        // todo: encapsulate these so calculated fields are always correct
+        public int PID;
+        public BoxLabels4 Label;
+        public long SerialNumber;
+        public byte[] Data;
+
+        public BoxRecord4 Clone()
+        {
+            return new BoxRecord4(PID, Label, SerialNumber, Data.ToArray());
+        }
+    }
+
+    public enum BoxLabels4 : int
+    {
+        Favorite = 0x00,
+        Cool = 0x01,
+        Cute = 0x02,
+        Suggested = 0x03,
+        Fun = 0x04,
+        Select = 0x05
+    }
+}