Add settings to ignore sub-grids when counting small and large grids.

[MartinAndreev]

Hey, I really like the plugin, but we are having a small issue, where subgrids are being counted as not part of the grid. Checked your code, and found a way it can be added as a setting, but adding an additional check

 sb.AppendLine($"Small Grid Block Limits");
 foreach (var grid in grids.Where(x=> x.BlocksCount > 0 && x.GridSizeEnum == MyCubeSize.Small && grids.Count(y => y.IsSameConstructAs(x)) == 0))
                        {

that checks if it's connected in any way to the grid.

https://github.com/malware-dev/MDK-SE/wiki/VRage.Game.ModAPI.Ingame.IMyCubeGrid.IsSameConstructAs

Is there a way that this can be added to the plugin?