Move Common functionality to Core project & rendering and Model support as well

PckStudio.Rendering/TextureVertex.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Runtime.InteropServices;
+using OpenTK;
+
+namespace PckStudio.Rendering
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 4, Size = 20)]
+    public struct TextureVertex
+    {
+        public Vector3 Position { get; set; }
+        public Vector2 TexPosition { get; set; }
+        
+        public TextureVertex(Vector3 position, Vector2 texPosition)
+        {
+            Position = position;
+            TexPosition = texPosition;
+        }
+    }
+}