add: Item Manager

src/Attributes/SkinInfo.cs

@@ -0,0 +1,8 @@
+namespace Polonium.Attributes;
+[AttributeUsage(AttributeTargets.Class)]
+public class SkinInfo(string path, int roots = 1) : Attribute
+{
+    public string Path { get; set; } = path;
+    public int Roots { get; set; } = roots;
+    
+}