Core - Add ArmorPiece.cs & ArmorSet.cs & rename 'ArmorPieceDescription' to 'ArmorSetDescription'

PckStudio.Core/ArmorSet.cs

@@ -0,0 +1,20 @@
+using System.Drawing;
+using PckStudio.Core.Skin;
+
+namespace PckStudio.Core
+{
+    public sealed class ArmorSet
+    {
+        public string Name { get; }
+        public Image BaseTexture => _layers[0];
+        public Image Layer => _layers[1];
+        private Image[] _layers = new Image[2];
+
+        public ArmorSet(string name, Image baseTexture, Image overlay)
+        {
+            Name = name;
+            _layers[0] = baseTexture;
+            _layers[1] = overlay;
+        }
+    }
+}