ready for testing

ObservatoryCore/UI/ColumnSizing.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Observatory.UI
+{
+    public class ColumnSizing
+    {
+        public string PluginName { get; set; }
+        public string PluginVersion { get; set; }
+        public Dictionary<string, int> ColumnWidth 
+        {
+            get
+            {
+                _columnWidth ??= new Dictionary<string, int>();
+
+                return _columnWidth;
+            }
+             
+            set => _columnWidth = value;
+        }
+
+        private Dictionary<string, int>? _columnWidth;
+    }
+}