Created BehaviourUtil for handling BehaviourFiles

PCK-Studio/Forms/Utilities/BehaviourUtil.cs

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+using Newtonsoft.Json.Linq;
+using System.Collections.Generic;
+using System.Drawing.Drawing2D;
+using System.Drawing;
+using System.Linq;
+
+using PckStudio.Properties;
+using PckStudio.Classes.FileTypes;
+using PckStudio.Classes.IO.Behaviour;
+using PckStudio.Classes.Utils;
+using System.Diagnostics;
+using System.Drawing.Imaging;
+using System.IO;
+
+namespace PckStudio.Forms.Utilities
+{
+    public static class BehaviourUtil
+    {
+        public static readonly JObject entityData = JObject.Parse(Resources.entityBehaviourData);
+        private static Image[] _entityImages;
+        public static Image[] entityImages
+        {
+            get { 
+                if (_entityImages == null)
+                    _entityImages = ImageUtils.CreateImageList(Resources.entities_sheet, 32).ToArray();
+                return _entityImages;
+            }
+        }
+        public static PCKFile.FileData CreateNewBehaviourFile(Image source, string tileName, bool isItem)
+        {
+            PCKFile.FileData file = new PCKFile.FileData($"behaviours.bin", PCKFile.FileData.FileType.BehavioursFile);
+
+            using (var stream = new MemoryStream())
+            {
+                BehavioursWriter.Write(stream, new BehaviourFile());
+                file.SetData(stream.ToArray());
+            }
+            
+            return file;
+        }
+    }
+}