dropfleet detailed clusters markers

these Dropfleet commander sector markers are based on the excellent, accurate, but plain, cluster markers from Soulmark. They have details added to give the suggestion of cities while still maintaining a very low profile- standing ship bases on these is not a problem. The scale of dropfleet makes adding actual buildings to scale beyond the resolution of a FDM printer.

The 4 sector and 2 sector cluster markers are better than the 3 sector one- the detail of this one does not come out well on a