Made columns of StockMovementGrid able to be selected

prs.desktop/Grids/StockMovementGrid.cs

@@ -11,6 +11,13 @@ namespace PRSDesktop;
 
 public class StockMovementGrid : DynamicDataGrid<StockMovement>, IDefaultGrid
 {
+    protected override void DoReconfigure(DynamicGridOptions options)
+    {
+        base.DoReconfigure(options);
+
+        options.SelectColumns = true;
+    }
+
     public override DynamicGridColumns GenerateColumns()
     {
         return StandardColumns();