mini map

Hey all, As explained in the Additive UI Elements post in the tutorials section, we have found a way to non-desctructively (e.g. without overiding the panel-mini-map.js file) create lenses. I'm hoping mods from -- amongst others -- @wltk , @BlobRoss and @moxl can get updated to follow the same...

I don't like the way the minimap looks in Civ VI, largely because it doesn't differentiate between land and water tiles if they're part of someone's territory, so you can't actually see the shape of the land, especially in the late game. I preferred the Civ V minimap that only changed the colour...