Signitifantly reduced build size

Updated project folder names
Show only selected layer in visualization
Added rectangle support

src/Artemis.Plugins.LayerBrushes.Color/ColorBrushProvider.cs

@@ -0,0 +1,25 @@
+using Artemis.Core.Plugins.LayerBrush;
+using Artemis.Core.Plugins.Models;
+
+namespace Artemis.Plugins.LayerBrushes.Color
+{
+    public class ColorBrushProvider : LayerBrushProvider
+    {
+        public ColorBrushProvider(PluginInfo pluginInfo) : base(pluginInfo)
+        {
+            AddLayerBrushDescriptor<ColorBrush>("Color", "A color with an (optional) gradient", "Brush");
+        }
+
+        public override void EnablePlugin()
+        {
+        }
+
+        public override void DisablePlugin()
+        {
+        }
+
+        public override void Dispose()
+        {
+        }
+    }
+}